A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A harrowing trail up a mile-high mountain.

A sacred mountaintop temple offers a fine cup of tea to visitors who can survive the journey.

A fifth-century temple improbably built into the side of a cliff.

The most famous location in China was home to whole dynasties worth of imperial rulers.

This probably wasn't what Mao had in mind.

The mummified relic of St. Antoninus.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Go inside to really appreciate this 500-year-old technological masterpiece.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Elevated freight railway turned wildly successful urban park.