Elevated freight railway turned wildly successful urban park.

The first skyscraper to include a Ferris wheel built into the facade.

A fountain filled with golden statues, celebrating the the ancient kingdom of Colchis.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

This medieval city gate is now a blend of the past and the modern world.

Pompeii's less famous neighbor is still revealing her secrets.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The glowing blue Nymphaeum of Emperor Tiberius.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

The only museum with its curator—and her pets—buried inside.

This stone tower was built to protect Crete from incoming pirates.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.