Urquhart castle, Loch Ness
"Urquhart Castle sits beside Loch Ness in Scotland along the A82 road, between Fort William and Inverness. It is close to the village of Drumnadrochit. Though extensively ruined, it was in its day one of the largest strongholds of medieval Scotland, and remains an impressive structure, splendidly situated on a headland overlooking Loch Ness. It is also near the castle where the majority of Nessie (Loch Ness Monster) sightings occur."