Grosmont is a one of the "Three Castles of Gwent" a trio of strongholds (also including Skenfrith and White Castle).

The original earth-and-timber stronghold was built on a "gros mont" (French for ‘big hill’) and later replaced in stone.

Access is free, year round.

Chloe K

March 3, 2019

Road cycling

Mott and Bailey Norman Castle ruins with an elegant 14th century chimney

David Howells

April 18, 2026

Hiking

Grosmont Castle is maintained by Cadw, and at the moment there is a lot of work going on with the refurbishment of the timber footbridge spanning the castle ditch, i.e., the entrance. Therefore, the castle is closed between February 2026 and September 2026. It is still worth a visit as you can still walk around it and get some impression of mediaeval life from viewing this grand structure.

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Best routes near Grosmont Castle Ruins

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Angel Inn – Grosmont Castle Ruins loop from Grosmont

6.73km

02:14

320m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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#2.

Skenfrith Castle – Garway Hill summit loop from Grosmont

23.8km

07:11

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Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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#3.

Garway Hill summit – Skenfrith Castle loop from Skenfrith

23.5km

07:05

730m

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Hard

Details

Informations

Elevation 110 m

Weather

Tuesday 5 May

13°C

7°C

0 %

Additional weather tips

Max wind speed: 12.0 km/h

Most visited during

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Take Me There

Location: Grosmont, Monmouthshire, South Wales, Wales, United Kingdom

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Grosmont Castle Ruins

#1.

Angel Inn – Grosmont Castle Ruins loop from Grosmont

#2.

Skenfrith Castle – Garway Hill summit loop from Grosmont

#3.

Garway Hill summit – Skenfrith Castle loop from Skenfrith

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