Dunmore Cave

Foulksrath Castle (Irish: Caislean Ratha) is a 15th century

Kells Priory is one of the largest and most impressive medieval

The Callan Augustinian Friary is situated in Callan, Co Kilkenny,

Carlow Castle is situated on the banks of the River Barrow near Carlow

Jerpoint Abbey is a Cistercian abbey, founded in the second half of

Dysart Castle is a castle ruins and property just outside Thomastown

Duiske Abbey or Graiguenamanagh Abbey is a 13th century Cistercian

The Rock of Dunamase (Dún Masc 'the fort of Masc' in Irish Gaelic),

Howe Caverns is a cave in Howes Cave, Schoharie County, New York.

Luray Caverns, originally called Luray Cave, is a large, celebrated

Cave of the Mounds, a natural limestone cave located near Blue Mounds,

Grand Caverns, formerly known as Weyer's Cave, is located in the

Marengo Cave is located in Marengo, Indiana. One of only four show