Eilean Donan Castle in sepia (Highlands, Scotland).

View of the beautiful Eilean Donan Castle which began to be built in 1220 and is located on the small island of the same name on Lake Duich, northwest of Scotland. It is only accessible by boat or through a narrow stone bridge that connects the island with the shore of the lake, (pictured at low tide) so that in its day it turned out to be a powerful fortress very difficult to take.