Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

Singapore's landscaping project is home to 18 incredible Supertrees.

Ruins of a German Castle on top of a towering stone pillar.

France's most famous cemetery, with some of its most curious tombs.

This plaza at the end of the world teems with monumental tributes to a problematic history, and laser discs.

This stunning mass of ice spans 121 square miles and is still growing.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Elevated freight railway turned wildly successful urban park.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

An artist's cute bronze subway sculptures belie his violent artistic past.

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ship-sized kinetic sculptural fantasy.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

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

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

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.