A sacred well steeped in Pagan roots on the West Coast of Ireland.

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

The atmospheric road was never meant to be so creepy.

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

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

Northern Ireland's Brobdingnagian stepping stones.

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

Northern Ireland's church-turned-skate park.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

One of the best examples of the modernist movement in Madrid.

This lucky bronze frog was gifted to Madrid by a casino.

An automaton perched above an classic clock and watch store

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

These distorting, funhouse mirrors achieved fame in a renowned piece of Spanish theater.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

The Spanish king's private bathroom embraced the idea of a porcelain throne.