A unique collection of gilded age mechanical pianos.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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

Hear the quietest sound from across the dome.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

Mined to a depth of 240 meters with a perimeter of about 1.6 km, the largest hand-dug excavation in the world.

A sculpted indigenous garden featuring more than 60 works by Dylan Lewis.

An ancient impact crater on the outskirts of Pretoria.

A safari-themed castle in the South African bush with the largest maze in the southern hemisphere.