A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

A land of debatable treasure.

A giant open-air sculpture made of over 200 full-sized boats.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

Odd outsider art installations surround a Gold Rush-era ghost town.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A musical instrument played by the sea.

This one-time health resort was used by aristocrats around the world.

The bomb-ravaged remains of of a colossal Neptune.

Five candy-colored villages on the Italian Riviera.

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

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

This beautifully historic Bahrain fortress might not be the most popular attraction around, but that might make it all the better.

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

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

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