These temples are among the oldest free-standing stone buildings in the world.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

The morbid items in this small and hidden museum are not for the weak stomached.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

More than 450 years ago, an Italian nun became the first woman to paint the iconic subject.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The final resting place of the poets Shelley and Keats.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

2300-year-old Roman road connecting the empire.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

Mummified monks and the accidentally interred, in a 17th-century crypt.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A giant portrait of an ancient king looms over the river.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

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

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

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.