Yester Castle is a ruined castle, located 1.5 miles (2.4 km) south east of the village of Gifford in East Lothian, Scotland. The only remaining complete structure is the subterranean Goblin Ha' or Hobgoblin Ha' (Goblin Hall). It is a Scheduled Ancient Monument, recorded as such by the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS).[2]