Welcome to the edge of the world. You are standing before Tantallon Castle, a colossal fourteenth-century ruin that seems to grow directly out of the jagged cliffs of East Lothian. Take a moment to look past the stone walls toward the Firth of Forth. That massive white rock rising from the sea is the Bass Rock, home to one of the largest gannet colonies on the planet. This fortress, located off the Alpha one nine eight coastal road near North Berwick, was built around the year thirteen fifty by William Douglas, the first Earl of Douglas. It was designed to be more than just a home; it was a defiant statement of power etched in red sandstone. As you walk toward the entrance, notice how the castle only has walls on the landward side. On the other three sides, the hundred-foot drops to the North Sea provided all the protection the Douglas family ever needed. Today, you will walk in the footsteps of rebels and kings who turned this clifftop into a theater of Scottish history.