This picturesque lighthouse at the edge of the Irish Sea looks like a giant stone pencil.

400 million years of erosion shaped these fascinating seaside caves, which made an appearance on 'Game of Thrones.'

A museum dedicated to the tragedy of Bloody Sunday.

These murals stand as reminders to the troubled history of this Northern Ireland city.

A memorial to a goat culled during a foot and mouth disease outbreak guards a series of fantastical caves.

An Irish cemetery filled with victims of political strife and violent conflict, including the grave of Bobby Sands.

The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Where a troll might repair your shoes in exchange for a bowl of porridge.

An Orlando museum houses the world’s most comprehensive collection of work by Louis Comfort Tiffany.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

At this 16th-century monastery in rural Bulgaria, visitors can also spend the night.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

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

The oldest public library in Ireland.

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

Originally commissioned as a sculpture to reflect the history of Belfast's red-light district, the final sculpture has been banned from Belfast public land.

A series of stained glass artworks that depict images of the hit TV show.

This massive monument has been telling the time for 150 years—at a slight angle.