The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

A daily replay of the experiment that proved the rotation of the Earth.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

The first American department store, and home to the largest operating musical instrument in the world.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

These post boxes from a bygone era have been the source of controversy and debate.

Regal guardians to one of the biggest banks in the world, symbols of Hong Kong's history and resilience.

The last street gas lamps in Hong Kong.

Two cannon-like cranes were installed on top of the bank building to fend off bad feng shui.

This naval gun is fired every day at noon, an odd timekeeping tradition the origin of which is local legend.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Taoism, Buddhist and Confucianism are all represented in this temple that claims to answer anyone's wishes.

Venture into the hideout of one of Hong Kong's legendary pirates.

Climb to the top of the world's largest seated bronze Buddha.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

The feminist fashion collective centering Palestinian craftsmanship and radical transparency.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

Tel Aviv's popular neighborhood went though endless waves of transformation.