Cateran Hole

Chillingham Castle is a medieval castle in the village of Chillingham

Hulne Priory is a monastery founded in the 13th century by the

Brizlee Tower (sometimes Brislee Tower) is a Grade 1 listed folly

St Cuthbert's Cave is a natural sandstone cave in Northumberland

ปราสาทแอนิก (อังกฤษ: Alnwick Castle) เป็นปราสาทซึ่งตั้งอยู่ในเมืองแอนิ

The Tenantry Column is a monument to the south of Alnwick town centre,

Bamburgh Castle is an imposing castle located on the coast at Bamburgh

Edlingham Castle is a small castle ruin, having Scheduled Ancient

The Salt Cathedral of Zipaquirá (Spanish: Catedral de Sal de

Karaca Cave (Turkish: Karaca Mağarası) is a network of caves l

Batu Caves is a limestone hill, which has a series of caves and cave

Saeva dupka (Bulgarian: Съева дупка) is a cave in Northern Bulgaria

The Wieliczka Salt Mine, located in the town of Wieliczka in southern