Eilean Donan Castle, Scotland

Occupying a small tidal island at the confluence of three sea lochs in the Scottish Highlands, Eilean Donan Castle is Scotland's most photographed monument and appeared in films including Highlander (1986) and The World Is Not Enough (1999). Originally founded in the 13th century, the castle was almost completely destroyed in 1719 during a Jacobite uprising; the current building is a faithful reconstruction completed in 1932 after 20 years of restoration work.