Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Recreations of a Norse longhouse and boat on Shetland's northernmost inhabited island.

This Shetland Islands bus shelter may be small, but it squeezes in a couch, a desk, some art, and even an old telly.

The recurring nature of this geographic feature might make it unique in the world.

This audio art installation pays tribute to the weather and unique linguistic history of the archipelago.

This memorial celebrates the legacy of the British-Norwegian resistance movement during World War II.

A remarkably well preserved tower dating all the way back to the Iron Age.

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

Enter the world under the hill at this ancient UK burial chamber.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

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

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

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

A superbly preserved example of Georgian residential architecture that was once home to one of the founders of Alexandria, Virginia.

An original apothecary from 1792.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

"May prick nor purse ne'er fail you."

Legends surrounding this megalithic tomb range from giants to a dwarf named Trollid.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

This Scottish burial tomb once held hundreds of ancient eagle bones.