The longest escalator in the Western Hemisphere takes over three minutes to ride down.

A hidden alley in urban Baltimore is a haven for graffiti artists.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

An astounding collection of medical specimens, including bits of President Lincoln.

Eighteen miniature death-scene dioramas.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Quite simply the largest tree in the world (by volume).

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Elevated freight railway turned wildly successful urban park.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

America's most famous piece of self-built architecture.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

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

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

One of the only memorials dedicated to journalists who died in combat.