You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

This striking statue brings a scene from the African savannah into central London.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A secret climbing tree hides along the side of a Costa Rican road.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

This museum is dedicated solely to this millennia-old handheld cooling device.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The celebrated eyesore created by starry-eyed sweethearts.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

The video game-themed street art first popped up in the French city.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This Parisian gem is one of the most incredible ethnographic museums in the world.

This bridge was constructed from the rubble of the infamous Bastille.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

A series of abstract, silly sculptures represent the works of a great modern classical composer.