Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

A mysterious echo seems to defy the laws of acoustics.

Of all the unique artifacts inside this library, a mummified hand stands out among the others.

Secluded amid upstate New York’s Adirondack Mountains lies this subterranean emblem of a nation on the brink of nuclear war. And it's for sale.

A cable-suspension footbridge that hangs high above the Mill River.

This charming woodland trail is peppered with poetry.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

Cryptid lake monster honored with its own monument.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

Driftwood dinosaurs lurk within trees covered in a rainbow array of avian abodes.

A gardener's enduring labor of love is spread throughout a small Vermont town.

DIY collection of eclectic holdings.

Hike deep into the woods to explore this Gilded Age masterpiece.

This memorial in the Adirondack wilderness honors the accidental death of a Scottish entrepreneur.

The summit Roosevelt conquered before he descended to become The Chief.

A hamlet full of permanent Christmas spirit holds one of the earliest theme parks in the United States.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

The first permanent memorial to a unique secret weapon of World War II.

A massive underwater sinkhole made famous by Jacques Cousteau.

The 28-foot granite map plots the locations of 40 theaters in New York City.

The laboratory where the Soviet secret police invented exotic poisons used to kill dissidents in hideous and (mostly) untraceable ways.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.