Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

This remote church calls a tiny island its sanctuary.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

What happens when you cross a mayor and a painter?

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

These barriers stand as stark reminders of Northern Ireland's troubled past.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

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

These engineering masterpieces are a dominant feature of the Belfast skyline.

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

A small plaque highlights the damage caused by German air raids during World War II.

It was once nicknamed "the most bombed hotel in Europe."

The house where the writer spent his formative years.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

A guitar mounted on a wall in Temple Bar honors the Irish musician.