Ranked by strength
The 7 strongest castles in Czechia
Czechia’s mightiest fortresses — the strongholds built to hold against siege, ranked by military strength rather than fame. Each links through to its full history, and you can rebuild any of them to explore with AI.
- 1
Czechia · Restored · prime 1365
Karlštejn Castle
Karlštejn Castle is a large Gothic royal castle in Czechia, founded in 1348 by King Charles IV to house the Imperial Regalia, Bohemian crown jewels, relics and royal treasures. Built on a wooded rocky promontory above the Berounka river, the complex is arranged on terraces and includes the imperial palace, the Marian Tower and the great tower whose central Chapel of the Holy Cross held the treasury.
- 2
Czechia · Restored · prime 1846
Špilberk Castle
Špilberk Castle is a hilltop medieval royal castle in Brno, Southern Moravia that was expanded and converted over centuries into a fortified citadel and state prison. It later served as barracks and since 1960 has housed the Brno City Museum. The complex combines high plastered curtain walls, a compact cluster of red‑tiled roofs and a prominent white tower above brick bastions.
- 3
Czechia · Restored · prime 1395
Loket Castle
Loket Castle is a stone castle of 12th-century origin in Loket, Czechia, sited on a massive rock and surrounded on three sides by the Ohře river. It preserves Romanesque fabric overlain by extensive 14th-century Gothic reconstructions and later additions; today it functions as a museum and national monument.
- 4
Czechia · Restored · prime 1500
Křivoklát Castle
Křivoklát Castle is a medieval royal castle in the Central Bohemian Region of the Czech Republic, founded in the 12th century and expanded by successive Bohemian kings. It was rebuilt and enlarged in the later Middle Ages and today is a protected national cultural monument housing a museum and exhibitions.
- 5
Czechia · Restored · prime 1278
Zvíkov Castle
Zvíkov is an early-Gothic royal castle on a steep rocky promontory above the confluence of the Vltava and Otava rivers in South Bohemia. Built in the first half of the 13th century and expanded through the medieval period, it combines a massive residential keep, palace wings and strong curtain walls with a prominent cylindrical bergfrit. The site has been restored and is open to visitors.
- 6
Czechia · Still standing · prime 1350
Kost Castle
Kost Castle is a Gothic fortress in Libošovice in the Hradec Králové Region of the Czech Republic, founded before 1349 and preserved with most of its original features. It is notable for its trapezoidal donjon called Bílá věž and for being protected by two concentric rings of stone fortress walls. The castle occupies a narrow spit of land between two brooks rather than a hilltop.
- 7
Czechia · Restored · prime 1910
Bouzov Castle
Bouzov Castle is a hilltop castle in the Olomouc Region of the Czech Republic, first mentioned in 1317 and substantially rebuilt in a Neo‑Gothic style around the turn of the 20th century. The complex is dominated by a tall central watchtower and a horseshoe arrangement of stone buildings that include ceremonial interiors such as a knights' hall, armoury and a neo‑Gothic chapel.