Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

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

This bridge was constructed from the remains of the first Ferris wheel.

Five varieties of trees with custom-designed grates around the trunk are planted along the route of the Seattle Transit Tunnel.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

Thanks to its curved shape, this incredibly durable dam "whispers" to visitors.

The largest known open fault in the United States is basically a giant natural refrigerator.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

A peaceful international sculpture garden in upstate New York.

A Frankenstein blend of science and art allows one tree to produce 40 different types of stone fruit.

A journey through military artifacts and the history of Cortland.

A fictional town that was briefly brought to life before fading once again out of existence.

This relic of 19th-century infrastructure is one of the few remaining coal gas storage tanks in the U.S.

All that remains of one of the Civil War's more deadly POW camps is a simple flagstone.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

A small granite block at this monument's base is the only part of Lincoln's Tomb outside of Illinois.

A collection of unique outdoor sculptures surounded by the beauty of nature.

Pluto is still considered a planet in Ithaca, New York.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

This museum pays homage to a device that precipitated a watershed moment in Finger Lakes food production.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground