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

This ancient Irish landscape boasts hundreds of legendary ruins.

Petrified footprints of one of the very first vertebrates to walk on land.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

An ancient neolithic tomb that only sees the sun twice a year.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

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

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

Three bridges straddle a stream, one stacked upon the other.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

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

Legend has it that a Dutch fisherman lost control of his Shetland pony and tumbled from this cliff.

Despite what a Thai tourism board might want you to think, this white-sand beach is in fact located on a Scottish island.

The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

FIFA deemed this isolated field one of the most remarkable places to play the sport.

A British plaque explains that a house was built using the spoils of the first international golf bet.

The small Scottish townhouse where the "Father of the National Parks" was born.

This tiny weathered plot is one of the oldest Jewish cemeteries in Scotland.

This once-majestic, now-abandoned Victorian castle has seen better days.

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

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

This rare surviving broch is one of Scotland's most impressive Bronze Age structures.