Private
A castle was built on the site in 1106, and passed through various owners. In 1645 it was captured by Fairfax during the English Civil War. Subsequently the castle was partly demolished, and a mansion build on the site. Parts of the old castle are incorporated into the current buildings on the site.
Today, the visitor can see some pleasant gardens in the grounds, a ruined tower, views down to the river Exe, and a number of rooms mostly in the ‘Castle Barton’ wing with the round tower etc. Some interesting arms, armour, paintings and 17th century furniture can be seen.
The Castle website rather talks up Tiverton Castle, but don’t plan a half-day visit: I was able to see all of the public parts in one and a quarter hours.