Dysert O'Dea Castle is a restored 15th-century stronghold built in 1480 by the O'Dea clan in County Clare. This four-story tower house features ten period rooms and medieval architectural elements, and reopened to the public in 1986 after expert restoration work. Beyond the castle, a four-kilometer archaeology trail connects 25 original field monuments spanning over 1000 years, including a 12th-century Romanesque church, a fine high cross, round tower remains, and ancient sites. The venue offers free parking, refreshments, and walking trail options to explore the surrounding monuments.