The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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

The final resting place of one of Germany's most accomplished Renaissance men.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

These barriers stand as stark reminders of Northern Ireland's troubled past.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

This mysterious and unique painting is filled with symbolism.

The pockmarks across the building's facade are remnants of the Blitz.

The city's oldest Chinese restaurant offers local history and seriously good food.

This tile-work piece featuring a chicken riding in carriage is both a remarkable artistic creation and a social commentary of politics and culture in 17th-century Portugal.

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

Where members of the Crossbow Corps of San Marino demonstrate their skills.

One of the newest mosques in a city filled with thousands.

A tiny park in the middle of some big power politics.

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

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

This Soviet statue is based on a piece of propaganda that's been elevated to national myth.

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

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

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

Witness traditional silk production in the Uzbek city that's been a hub of sericulture for over a thousand years.

Giant cauldrons overflow with Uzbekistan's favorite rice dish at this cavernous dining hall.

Where Stoddart and Connolly suffered in the infamous Bug Pit.