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Cairns Castle today

Scotland · Ruin

Cairns Castle

Cairns Castle is a 15th-century ruined keep on the northern slope of the Pentland Hills, near the south-west end of Harperrig Reservoir in West Lothian, Scotland. The building originally comprised a main rectangular keep with an adjoining wing, a vaulted basement, a ground-floor kitchen and a hall above, connected by a turnpike stair; an eastern entrance tower once stood beside it. The site is a scheduled monument.

Photograph via Wikimedia Commons

Its prime

1450

Today

Ruin

As it stood in 1450

What Cairns Castle looked like in its prime.

A compact rectangular stone keep rising to at least three storeys with an attached lateral wing set into the hillside above Harperrig Reservoir. At prime the keep presented continuous masonry walls, a separate entrance tower on the east, and a corner turnpike stair linking basement, kitchen, hall and upper floors; the basement was vaulted and the ground floor contained the kitchen, with the great hall occupying the floor above. The castle sat exposed on the northern slope of the Pentland Hills overlooking the reservoir.

Its story

The story of Cairns Castle.

Cairns Castle is a ruined 15th-century keep on the northern slope of the Pentland Hills, at the south-west end of Harperrig Reservoir in West Lothian. The main rectangular block and its adjoining wing rose at least three storeys over a vaulted basement, with a kitchen on the ground floor and a hall above, all reached by a turnpike stair set in the corner between block and wing.

An entrance tower once stood to the east but no longer exists, and at some point the kitchen fireplace was converted into an entrance. The ruin may also have been known as Easter Cairns Castle, though that name may belong to another castle in the area. It has been a scheduled monument since 1981, and was a category B listed building until de-listed in 2015.

Step inside

8 places to explore in 1450.

The record describes 8 distinct spots at Cairns Castle, including 5 interiors: vaulted basement, ground-floor kitchen, great hall (first floor) and more. Create your own photoreal reconstruction and explore every one, more scenes means more rooms, more angles, and more of the place to stand in.

Approach from Harperrig ReservoirEastern entrance tower and gatewayWest face of the main keep, overlooking the reservoirVaulted basementGround-floor kitchenGreat hall (first floor)Turnpike stair between main block and wingUpper chamber in the adjoining wing

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From the archive

Cairns 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.

Fig. 1377. — East Cairns Castle. Plan of First Floor., Cairns Castle

Fig. 1377. — East Cairns Castle. Plan of First Floor.

1892 · MacGibbon & Ross, vol. 5 (1892)

Public domain

Questions about Cairns Castle

What is the history of Cairns Castle?

Cairns Castle dates from the 15th century and passed to the Crichtons through marriage. The castle’s heiress was the granddaughter of William de Carnys, described as its original owner. It may also have been known as Easter Cairns Castle, although that name may refer to another castle in the area.

What is inside Cairns Castle?

Inside Cairns Castle are a vaulted basement, a ground-floor kitchen and a hall above. A turnpike stair in the corner between the main block and adjoining wing connected the floors. The adjoining wing also contained an upper chamber, while the kitchen fireplace was later converted into an entrance.

Where is Cairns Castle?

Cairns Castle is on the northern slope of the Pentland Hills, at the south-west end of Harperrig Reservoir in West Lothian. It is around 6.5 miles, or 10.5 kilometres, south-west of Balerno. The site overlooks the reservoir from the hillside.

When was Cairns Castle built?

Cairns Castle was built in the 15th century. The first-raised year is not recorded, while its prime date is given as 1450. The surviving building was a keep with an adjoining wing, rising at least three storeys above a vaulted basement.

What did Cairns Castle look like in its prime?

Cairns Castle was a compact rectangular stone keep with an attached lateral wing set into the hillside. At its height, continuous masonry walls, an eastern entrance tower and gateway, and a corner turnpike stair defined the structure. It stood exposed on the northern slope of the Pentland Hills overlooking Harperrig Reservoir.

Is Cairns Castle still standing or is it a ruin?

Cairns Castle is now a ruin. The main keep and adjoining wing survive, but the eastern entrance tower no longer exists. The castle was a scheduled monument from 1981 and was a category B listed building until it was de-listed in 2015.
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