These whimsical works of art tell the story of the city's past and present.

A memorial to Chinese freedom in the city where American freedom was born.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

The first museum dedicated to exploring humanity's cultural relationship with the celestial world.

Built to ward off Napoleon's army, this city-sized abandoned Russian fort is now perfect for urban exploration.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

The final resting place of the man who played the Invisible Man.

Once known throughout Europe, this tiny and unusually progressive 18th century micro-nation within Lithuania now lies in ruins.

A century-old prison in the heart of Vilnius is now a lively bar, dance club, and artist residency.

A miraculous three-handed portrait of a saint can be found inside this church.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

You would never guess that before World War II this lonely field was a bustling German city.

A small granite monument marks where the borders of three countries meet.

The two abandoned overpasses are among the largest bridges in Poland.

An impressive ensemble of sculptures that survived the Soviet regime.

Described as one of the Baltic region’s most daring and original construction projects.

A memorial to the murdered Jews of Kaunas.

Ever-growing collection of devils in art.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

From Nazi chemicals to the CIA, this architectural marvel has played a fascinating role in German history.

A rare chance to ride one of the few continuous elevators still in operation.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

The oldest stone house in Paris was built by its most famous alchemist.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.