Clan Rising
Trosky Castle today

Czechia · Ruin

Trosky Castle

Trosky Castle is a medieval hilltop castle ruin in the Bohemian Paradise of northern Czechia, built across the summits of two basalt volcanic plugs. The site comprises two principal towers on separate rocky spurs connected by curtain walls and ranges of buildings across the saddle between the rocks. It has been a landmark of the region since the late 14th century.

Photograph via Wikimedia Commons

First raised

1400

Its prime

1403

Today

Ruin

As it stood in 1403

What Trosky Castle looked like in its prime.

Perched on twin basalt volcanic plugs, the castle in its prime features two distinct stone towers: Panna, a taller four-sided tower crowning the higher 57 m outcrop, and Baba, a smaller two-storey building on the lower 47 m rock. Curtain walls and three concentric rings of fortification follow the contours of the crags and connect the towers across a narrow saddle filled with residential ranges and outhouses. The masonry is pale grey stone set directly onto dark volcanic rock; the complex dominates the surrounding forested hills and open fields.

Its story

The story of Trosky Castle.

Čeněk of Wartenberg's Two Rocks, 14th Century

Trosky was founded by Čeněk of Wartenberg in the second half of the 14th century on a pair of volcanic necks — the exposed fillings of vents that once pierced the surrounding sandstones and marls, since worked on by frost and by human hands. He set a tower on each: the six-sided Baba, the Crone, on the lower rock 47 metres above the courtyard, and the four-sided Panna, the Maiden, on the higher outcrop 57 metres up. Between them ran the elongated castle core with two palaces, walls 1.5 to 2 metres thick and as much as 15 metres high, and a walled outer ward along the northern side. Neither of the two gates was protected by a ditch. In the ground floor of the smaller, largely timber palace stood a smithy that was still working in the 17th century. The name means debris, and it belonged to the crumbling rocks before it belonged to the castle.

Archaeology puts the foundation significantly earlier than the first written mention, which comes in 1396 — by which date Čeněk was dead, and named in the record with the epithet "of Trosky". He no longer owned the place when he died: financial trouble in the early 1390s had forced him to make the castle over to King Wenceslaus IV, from whom it was acquired by Otto III of Bergau, first recorded as its owner in 1399.

The Opatovice Treasure and the Hussite Sieges, 1415–1428

Otto the Younger of Bergau inherited from his father and in 1415 joined Jan Městecký of Opočno in falling on the monastery at Opatovice and stripping it. For a man who passed himself off as a zealous Catholic it was an awkward piece of work, and the story that followed him is that he hid the monastery's famous treasure at Trosky, in an underground cellar sealed by a boulder so heavy that nobody could shift it. Scree eventually buried the boulder and closed the way to the valuables for good.

In the Hussite Wars the castle was one of the firm supports of the Catholic side, holding open the link between Bohemia and the Lusatian League alongside Kost, Kumburk, Frýdštejn, Bezděz and Ralsko. The Hussites tried it twice and failed both times, in 1424 and again in 1428, the second attempt pressed by Jan Královec, captain of the Taborite army, and coming shortly after the castle had burned.

Robber Knights on the Rock, 1438–1444

In 1438 or 1439 the castle fell to men who simply took it. Kryštof Šof of Helfenburg and a companion named Švejkar stormed Trosky, seized Otto the Younger himself, and settled in to prey on the villages around. An army raised by the sworn peace associations of East Bohemia and Boleslav besieged Trosky and nearby Valdštejn but could not take the rock. The feud dragged on until 1444, when the forces of Görlitz and Zittau, both towns of the Lusatian League, combined and broke Šof's band. The castle went back to Otto, who died soon afterwards, and his son Jan of Bergau inherited; Otto's widow Margareth had made Trosky her residence by that same year.

King George's Siege, 1469

Jan of Bergov sold Trosky in 1455 to Jan Zajíc of Hazmburk at Kost, who folded it into the Kost estate. As a member of the Zelená Hora Alliance he set himself against King George of Poděbrady, taking the formal office of supreme chancellor from Matthias Corvinus, and in 1467 the royal army besieged Kost to bring him to heel. The submission did not last. In 1469 George's forces laid siege to Kost, Trosky, Budyně nad Ohří, Hrubá Skála and Návarov; every one of them fell except Kost itself. The garrison at Trosky surrendered after 28 August and royal troops moved in — though Jan Zajíc then came to terms with the king, was pardoned, and had his property handed back.

The family held Trosky until 1497, when the guardian of the young heir, Zdeněk Lev of Rožmitál, sold Kost and Trosky together on 2 June to Jan of Šelmberk. His son Jindřich ran up debts heavy enough that he made both castles over to his largest creditor, Jan of Bibrštejn, and after Bibrštejn's son Kryštof the castle came to the Lobkowicz family; Kryštof of Lobkowicz and his wife Anna sold it in 1559 to Jindřich of Smiřice at Skály for 6,500 score of Bohemian groschen. By the 16th century no lord lived there, and the place was kept by the officials who ran the estate.

Swedes, Imperials and the Fire of 1648

The Smiřice estates were confiscated after Albrecht Jan Smiřický died in 1618, and in 1622 Trosky passed to Albrecht of Wallenstein. Through the Thirty Years' War it served as a fortress and was fought over hard: the Swedes took it in 1639, an Imperial army took it back a year later, and the two sides' garrisons alternated on the rock until 1648, when Imperial troops stormed and burned it for the last time. It was never repaired. When the Jesuit scholar Bohuslav Balbín came up to the ruins in 1681 he judged that, dilapidated as it was, the castle could still have been put right.

The Wallensteins kept the ruin until 1821, when they sold it to Jan Lexa of Aehrenthal, who began altering it in the romantic taste of the day. A spiral staircase intended to open the summit of Panna to visitors was started in 1841 and abandoned unfinished when Jan Lexa died in 1843. The Czech Tourist Club began repairing both towers, the walls and the gates in 1923, two years before the ruin became state property, and further work followed in 1934–1935; the later 20th century brought professional intervention to stabilise the rock mass and what was left of the buildings. A staircase to the Baba tower was built in 1999–2000, new flooring and a steel viewing gallery at its summit in early 2024. Trosky has been a national cultural monument since 2002.

Step inside

8 places to explore in 1403.

The record describes 8 distinct spots at Trosky Castle, including 3 interiors: panna tower, summit and battlements, baba tower, two-storey living quarters, underground cellar entrance blocked by a boulder. Create your own photoreal reconstruction and explore every one, more scenes means more rooms, more angles, and more of the place to stand in.

Exterior approach from the forested laneOuter gate and outer curtain wallInner ward and central courtyardSaddle passage linking the towersPanna tower, summit and battlementsBaba tower, two-storey living quartersFoot of the basalt plugs and cliff facesUnderground cellar entrance blocked by a boulder

Build Your Own Castle

Recreate Trosky Castle with AI to explore it.

The artist rebuilds it as it stood in 1403, a photoreal reconstruction that belongs to you alone. Pay with coins, no subscription needed.

Recreate this castle →

Castle Siege

Play Castle Siege at Trosky Castle.

A strategy game played on Trosky Castle’s real ground plan: the same surveyed walls shown in the archive below. Post your finite garrison on the battlements between assaults, then hold out as rams, siege towers, trebuchets and sappers arrive in ever-worse waves.

Sign in free to see the garrison muster. One castle costs 150 Clan Coins and is yours forever.

Sign in to take command →

See every castle’s leaderboard →

Whose castle

Clans who held Trosky Castle.

The families that held Trosky Castle for a decade or more across its history, follow a name to its clan.

  • Bergau

    Acquired by Otto III of Bergau in the 1390s and held by the family until 1497.

  • Lobkowicz

    Later held by the Šelmberk, Bibrštejn and Lobkowicz families.

From the archive

Trosky Castle on paper: the measured plan and period views.

The survey plan and photographs below are the ground truth this page's reconstructions are checked against, drawn and photographed while the castle was still a working garrison. Every image is public-domain or openly licensed, with its source named.

Trosky., Trosky Castle

Trosky.

1890s · A. Sedláček, Hrady, zámky a tvrze Království českého, díl 10 (1882–1927)

Public domain

Plán hradu Trosek., Trosky Castle

Plán hradu Trosek.

1890s · A. Sedláček, Hrady, zámky a tvrze Království českého, díl 10 (1882–1927)

Public domain

Questions about Trosky Castle

What is the history of Trosky Castle?

Trosky Castle began in the second half of the 14th century as a fortified hilltop castle founded by Čeněk of Wartenberg. Financial troubles forced Čeněk to transfer it to King Wenceslaus IV, and it then passed to Otto III of Bergau. It was a pro-Catholic stronghold in the Hussite Wars, later declined as a noble residence, and was left in ruins after destruction in 1648.

What is inside Trosky Castle?

Inside Trosky Castle you can see ruined tower spaces, former living quarters, palace remains, the courtyard area and service spaces between the rocks. Baba had an interior divided into four smaller spaces, entered through a vestibule, while Panna had living spaces on the first floor. The castle core also included a large two-room palace and a smaller palace whose ground floor contained a forge.

Who owns Trosky Castle now?

Trosky Castle is owned by the Czech Republic. It is a state-owned castle ruin rather than a private family seat. It also has national cultural monument status in the Czech Republic, recorded from 2002.

Why was Trosky Castle built?

Trosky Castle was built as a fortified noble residence on two basalt plugs. Its towers, residential buildings, outhouses and three rings of walls made it both a dwelling and a defensible stronghold. During the Hussite Wars it served as a centre of the pro-Catholic side, and by the second half of the 16th century it was no longer a noble residence but was managed by estate officials.

Does anyone live in Trosky Castle now?

No one lives in Trosky Castle now; it is a castle ruin. The castle stopped serving as a noble residence by the second half of the 16th century, when estate officials managed it instead. Today it is state-owned and open to the public rather than occupied as a home.

Where is Trosky Castle?

Trosky Castle is in the municipality of Troskovice in the Liberec Region of the Czech Republic. It lies about 10 kilometres south of Semily. The castle stands on the summits of two basalt volcanic plugs and is a landmark of the Bohemian Paradise region.

When was Trosky Castle built?

Trosky Castle was built in the 14th century. Its first written mention is in 1396, by which time Čeněk of Wartenberg was already dead and associated with Trosky. Archaeological research places the foundation significantly earlier than that written mention.

Was Trosky Castle ever attacked or besieged?

Yes, Trosky Castle was attacked and besieged several times. In the Hussite Wars it was not completely conquered, and in 1428 Jan Královec, captain of the Taborite army, besieged it. In 1469 King George of Poděbrady’s forces besieged Trosky and the garrison surrendered after 28 August. During the Thirty Years’ War it was occupied by Swedish and Imperial forces before Imperial troops destroyed it in 1648.

Which family held Trosky Castle?

The Bergau family held Trosky Castle from the 1390s until 1497. Otto III of Bergau acquired it after Čeněk of Wartenberg had transferred the castle to King Wenceslaus IV. Later holders included the Šelmberk, Bibrštejn and Lobkowicz families.

What did Trosky Castle look like in its prime?

In its prime Trosky Castle had a striking twin-towered silhouette on two basalt volcanic plugs. Panna, the taller four-sided tower, crowned the higher 57 metre outcrop, while Baba, a smaller two-storey structure, stood on the lower 47 metre rock. Pale grey masonry rose directly from dark volcanic stone, with curtain walls and three concentric rings of fortification joining the towers across the saddle.

Is Trosky Castle still standing?

Trosky Castle is still standing as a ruin. The two towers, walls, gates and building remains survived in damaged form, and repairs began in the 1920s. Later work stabilised the rock formations and remnants, a staircase to Baba was built in 1999–2000, and restoration continued in 2024 with new flooring and a steel observation deck at Baba.

Who built Trosky Castle?

Trosky Castle was established by Čeněk of Wartenberg. No named architect is given for its original construction. The castle later passed through King Wenceslaus IV to Otto III of Bergau after Čeněk’s financial troubles forced him to give it up.

Can you visit Trosky Castle?

Yes, Trosky Castle is open to the public. It is a state-owned castle ruin, with surviving towers, walls and courtyard areas rather than a private residence. It has also been a national cultural monument since 2002.
All castles of Czechia · Castles of Europe · the best castles in Europe · explore the finished reconstructions.