Ride the subways of yesteryear.

The lasting remains of the Balloon Section of the British Armed Forces.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

An ancient knight and a symbol of the city's freedom.

This huge metal monument is slowly being stripped to its concrete skeleton.

Humble beginnings for one of the world's most famous scientists.

The remains of a sunken military ship wreck visible through clear water.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

A wonderfully strange collection of 500+ stuffed frogs doing people things.

Where the lovelorn find a home for their sentimental keepsakes.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A carved bench marks the Scottish cave that inspired the classic adventure novel "Treasure Island."

Tucked away in this local museum is a piece of sporting equipment that dates to the 16th-century.

A distinctive building that incorporates a mythical beast into its architecture.

Legend says this rock was once a chopping block for public executions.

A majestic mansion designed in Mughalai style, complete with a turquoise onion dome.

A museum of carnival attractions where you are invited to ride the rides.

A melancholy jester sits on the grave of a famous 20th-century ballet dancer and choreographer.

The tomb of history's greatest potato promoter is surrounded by tubers.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.