The house where John Wilkes Booth conspired with his co-conspirators.

A nostalgic bibliographic gem.

The summer home of the largest colony of bats in the world.

This unique shop is full of memento mori art, antique medical equipment, secret society paraphernalia, and historical relics.

Shop for books in the New Orleans house where William Faulkner once lived.

Around 160 years ago, this spot marked the location of a wharf along the shores of the Charles River.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Eighty million natural history specimens call this gargantuan museum home.

This tiny island is home to the world's largest colony of Northern gannets.

Scotland still bears an enormous scar of its Roman past.

This single-track road rewards brave drivers with stunning Scottish scenery.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

These fantastically named natural pools look like something out of a Scottish myth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.