A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

Reverend Jen's unique museum/living room showcases her troll collection.

Prove you deserve to be fed by Kenny Shopsin.

New York's oldest magic store.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Tucked in the back of this amazing antique store is an important piece of medical history.

A terrific purveyor of natural history objects and curios.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

Why have you never heard of the second most popular tourist site in New York?

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

The curios of pharmacist and collector Henry Wellcome.

Traveling collection of amazing automata.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

The anatomical-pathological collection of a man who changed surgery.

A cluttered and astounding collection of antiquities and curiosities.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

This hidden art nouveau gem was designed by an architect in search of a national style.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

These azure waters were thought to lead to the Mayan Underworld.

A flooded Mexican cave that hides a river beneath the water.