A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

One of the best examples of a Byzantine period monument in Albania.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

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

A memorial to the atrocities of the People's Socialist Republic of Albania.

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

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A fountain standing as a testament to a doomed alliance.

The ancient latrines of the Greeks, in all their public glory.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

A marvel of Byzantine engineering under the streets of Istanbul.

Come for the flowers, stay for the bats!

These mythological giants take time out of their busy day guarding a Victorian market to let you know what time it is.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

The final resting place of 19th-century sailors previously banned from being buried within Portuguese Macau.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.