Luxembourg's most popular statue since 1923 has been missing for... 26 years!

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Buried deep in the forest near Limbe, this little-known slave port became the point of no return for 10 percent of enslaved Africans.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

This ironic war memorial thumbs its nose at a campaign of inedible humanitarian aid food products.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

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

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

Ancient artists in the middle of nowhere.

The largest known meteorite on Earth was too big to move.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The remains of diamond fever taken over by the desert.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

A stunning Victorian abbey and walled garden on a lakefront.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

A corkscrew-shaped barn in Ireland.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

Shoes and revealing shirts are not allowed inside this giant Vietnamese Christ.

Founded by French colonists in 1919, this mountain resort has been transformed into one-of-a-kind theme park.

An outstanding piece of retro Sci-Fi architecture built into a sacred mountain.

Extremely isolated Silk Road caravanserai in the middle of nowhere.