The village of Knockcroghery is located south-east of Roscommon Town along the N61. Knockcroghery, the Hangman’s Hill, is so called from an elevated mound east of the village, which was once a place of execution. The village is once again noted for the manufacture of clay pipes - why not visit the Claypipe Visitor Centre in Knockcroghery.
Beyond the village is Gailey Bay near the shore of which stands Gailey Castle, built in the 14th century. Out in the lake is the island of Inishcleraun named after a sister of Queen Medb, Clothra. Queen Medb is said to have been killed here by her nephew while she was bathing. This island was the site of a monastery founded by St Diarmait in 540 and, on it, are the remains of six churches.