The metal leaves on this tree are engraved with the names of Holocaust victims.

A collection of intricate sculptures so small they have to be seen through a microscope.

A forgotten graveyard lost in the tangles of an overgrown garden.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Museum dedicated to the terror regimes of Hungary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Armenian monks at an island monastery in the Venetian Lagoon make a rare rose petal jam.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Go inside to really appreciate this 500-year-old technological masterpiece.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

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

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

An alchemist's "magic door" stands in the middle of a Roman park.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.