A Baroque mansion with ties to legendary magicians and alchemists.

Visitors flock to the historic birthplace of radiobalneology for its therapeutic radium treatments.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

This Gothic church was wheeled in its entirety to a new location a half a mile away.

This copy of the famous Prague Astronomical Clock is the result of one man's passion project.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

Too much gossip or just missing curfew could land you in here for a couple of days.

A beautiful but deteriorating monument of Soviet architecture.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

With over 10,000 lights, this engineering marvel lights up the city after dark.

Unusual building appears to be haphazardly built from randomly piled bricks.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

Ancient rock-hewn town that witnessed key events of Georgian history.

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

Northern Ireland's Brobdingnagian stepping stones.

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

Despite the name, this 16th-century structure in Galway wasn't built by the Spanish.

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

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

Certain traditions prevail on the least-visited island of the Aran Islands.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.