The small island of Inchgarvie sits in the Firth of Forth, beneath the Forth Rail Bridge.
In the spring of 1879 work started on the island for a proposed bridge over the Forth that was never built. Today you can still see the column of bricks that were built for the bridge. the castle dates from 1490 and was used as a prison in 1519-1671.
In 1779 cannons were mounted here when John Paul Jones threatened the Firth of Forth