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

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

This hidden green space is the city's second largest conservatory.

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

The remains of Crystal Palace Great Exhibition of 1851.

Hear the quietest sound from across the dome.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

One part local history, 99 parts gruesome haunted house.

Eighty million natural history specimens call this gargantuan museum home.

Fourteen sculptures showing the development of a fetus stand outside a hospital for women and children.

Qatar's oldest market can trace its origins back more than a century.

A mesmerizing wonderland of salt-encrusted tree branches and pencil roots.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

The building is a gigantic piece of art inspired by the shape of a desert rose.

A superb spot to appreciate the traditional boats of the Indian Ocean.

The shallow, salty inlet was a safe haven for 19th-century pirates.