This famous city eluded concrete detection until the early 2000's.

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 fountain standing as a testament to a doomed alliance.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

1513 Turkish world map, full of European state secrets and snarky commentary.

A shopping mall housed in a historic cinema and hiding ancient ruins under its floors.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

This historic black and white monastery is one of Bulgaria's architectural jewels.

A two thousand year old brothel uncovered in Northern Greece.

6th century Byzantine mosaics preserved on a hill overlooking Lake Ohrid.

A war-torn Olympic relic is being overtaken by graffiti and nature.

Bridge that died in war and was resurected.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A diminutive statue that was inspired by the sculptor's own daughter.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

The largest and best-preserved rotunda in Prague.

Steadily reminding Czechia of its past.

Spitfire airplanes with butterfly wings hover over Prague’s skyline.

Liechtenstein's royal family calls this medieval alpine castle home.

Browse through a century of this principality's first popular export.

Four alabaster giants contemplate the tides on the shore of Denmark.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.