Watch bison, elk, and other wild animals up close at this national park.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

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

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

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

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

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

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

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The ruins of a medieval monastery named after a type of tree.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

A hugely vast Irish landscape of barren rock that stretches for miles.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

This single room has survived the centuries with almost no deterioration.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

The remnants of a creative early method of wildfire prevention.