Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

Statue of death tucked in the University of Medicine courtyard.

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

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A domino effect created with Britain’s iconic telephone boxes.

The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

The sculpture of the deceased cockatoo flops atop its personal plinth.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

These morbid carvings remind churchgoers of the inevitability of death.

The last four extravagant street signs of London's historic banking street.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A Roman spa buried deep beneath the City of London.

This secluded walkway overlooks a magnificently wild London green space.

A museum wholly devoted to juvenescence.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Two plaques commemorate the site of Shakespeare's first theatre.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A hands-off space for graffiti artists to hone and display their skills.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

A student driver's nightmare.