The remains of the Castle can be visited
CastleNewtownstewart
Stewart Castle

Stewart Castle (also known as Newtownstewart Castle) is a ruined castle situated in Newtownstewart, County Tyrone, Northern Ireland. It was built in 1619 by Sir Robert Newcomen in an "English manor house" style.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Kenneth Allen · Wikimedia Commons · CC BY-SA 2.0
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Location: 54.7190, -7.3750