Top Castles in Monmouthshire in 2026

An aerial view of a historic castle surrounded by lush green fields and a river.

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Our top choices for Monmouthshire castles

1. Thornbury Castle, Relais & Châteaux

Bristol

Melissa-Jane

Rp5.403.609 total

includes taxes & fees

17 Aug - 18 Aug

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Top Monmouthshire Hotel Reviews

Tŷ Newport

10/10 Excellent

"Great stay! Rooms were very cold as the AC was quite powerful and even when off it was very cold. But aside from that was an amazing place to stay. Staff were lovely. Food was great."

The Parkgate Hotel

10/10 Excellent

"Staff was amazing! Had a brilliant time for our anniversary. They were very attentive and even threw in a glass of prosecco to celebrate and a cake at the end. The room room was very comfortable however, there were a few bits of hair on the carpet and curtains but nothing major. The thermal spa was amazing."

Park Plaza Cardiff

10/10 Excellent

"The hotel was in a good central location close to the castle and various bars and restaurants as well as the main shopping precinct. All the staff we spoke to were very polite and helpful. The pool, steam room and jucuzzi were a good size and very clean. The hotel bar and associated external terrace was a nice place to relax and the bar prices were quite reasonable for a city centre hotel. We did not eat dinner at the hotel but the breakfast was a good standard. There is no parking at the hotel but there are several multi-storey car parks near by ranging in price from £26-£35 for 24hrs at the time of our visit."