On Church Street is the former
Church of Ireland, ''St. Catherine's Church'', built between 1715 and 1720 by Catherine Kneightly. It was renovated c. 1820 and by 1829 the steeple had been added. The building is now in use by the Clare Heritage and Genealogical Research Centre. An Irish
National Monument, the
Cross Inneenboy, also known as Roughan Hill Tau Cross, is a stone
tau cross which has been moved into the centre for safe keeping. Inchiquin Castle is located just outside the town, on the north side of
Lake Inchiquin. It was possibly begun by Teige-an-Chomhaid O'Brien (d. 1466). In 1542, it belonged to Turlough, son of
Murrough, first Baron of Inchiquin.
Murrough O'Brien, the fourth Baron, was in possession in 1580. His descendants, the
Marquesses of Thomond, derived their title of Earl of Inchiquin from this estate. During the
Nine Years' War,
Hugh Roe O'Donnell raided Clare and Inchiquin Castle was attacked by one of his lieutenants,
Maguire of Fermanagh. During the
Confederate Wars Christopher O'Brien,
Murrough the Burner's brother, lived here. Murrough's son, Colonel John O'Brien, abandoned Inchiquin towards the end of the 17th century. By then it had deteriorated into a ruin. Today the castle remains a ruin surrounded by pastures. Part of the older castle tower is still extant as is a good portion of the later 17th-century banquet hall. ==Town twinning==