An ancient Roman temple first dedicated to an emperor's wife is now a church.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

This ancient market is often referred to as the oldest shopping mall in the world.

A modern sliver of architecture in Roma.

2300-year-old Roman road connecting the empire.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The secret medieval communication system will whisk your words above the noise of the crowd.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This bell stars in a tragic love tale and is said to make wishes come true.

A tree planted by Marie Curie is treasured by the Radium institute that she set up.

Order “Proletariat’s Cutlet” at this communist-themed restaurant allegedly once visited by Lenin.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

An entertainment center in a huge transparent tent.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

Beatlemania is still going strong... at least in Kazakhstan.

This sprawling market is a one-stop shop for traditional Kazakh foods, from mare’s milk to sheep’s head.

In Kazakhstan, a colorful cathedral with many lives once survived the most powerful earthquake in the region.

The lovely lake that was naturally dammed, then naturally destroyed, then unnaturally saved.

Nicknamed Kazakhstan's Grand Canyon, this natural wonder lies east of Almaty near the Chinese border.

The heartbeat of modern Uzbekistan’s thriving market culture.

Looking for a unifying history, Uzbekistan finds its answer in a 14th Century Turco-Mongol conqueror... despite the fact he wasn't Uzbek.

Final palace complex of the last of 29 Kokand rulers.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.