In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

The first modernist church in Europe.

Visiting this café is like visiting the Austrian grandma you wish you had.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The resting place for anonymous victims of the Danube's dark waters.

This museum promotes informed contraception by documenting its often secret past.

Handsomely crafted representations of our round planet.

The topiary maze at the Habsburg hunting lodge.

A public work of art that also provides some relief from the summer heat.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

A peculiar museum that includes many drunken tales, a drunk driving simulator, and much more.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

No one is sure what to do with this WWII shipwreck that sits at the bottom of the Thames, still loaded with tons of explosives.

A sculpture of a famous ape who was once a beloved household name in London.

A relic of Victorian grandeur hides beneath a busy South London road.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

A haunting painting meant to capture the calamity of World War I.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.

King of the Saxons on top, Roman goddess of wisdom on the bottom.

This open-air mosaic gallery honoring an English artist took hundreds of volunteers more than seven years to create.

The broken skateboards that became a poignant memorial to a murdered skater.

This coin collecting cod is over 130 years old, and the United Kingdom's smallest listed structure.