For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

These giant metal horses graze on a hilltop near the Montana highway.

See the computer’s history revealed over the course of 20,000 years.

Supposedly Satanic numbers adorn this preserved submarine sail.

A museum dedicated to the history and art of staying clean.

Home to the deepest rift anywhere on Earth.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

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

One of only two commuter aerial tramways in the United States.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Elevated freight railway turned wildly successful urban park.

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