Caerlaverock, Dumfries DG1 4RU, UK
Photo by Tamara Kulikova / Shutterstock
Caerlaverock CastleUnique in its triangular shape, this red-sandstone castle is something of an unknown treasure. First attacked by England’s Edward I in 1300, Caerlaverock (pronounced kah-liver-ick) was repeatedly placed under siege and rebuilt over the centuries. Miraculously, the massive double tower, moat, ramparts, and interior palace all remain today, though in various states of ruination. On the grounds, a massive siege engine called a trebuchet indicates the awesome weapons that were once used to bombard the castle.