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

A haunting collection of the vanished and disappearing natural world.

A tongue-in-cheek arcade where the games are based on everyday life.

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

The first declared National Monument in the United States.

The site of the climactic scene from the classic horror film is now a historic landmark.

Stroll through a wonderland of stupendous moss-covered trees.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Try not to get slimed in Tribeca.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

A bizarre house filled with an astounding array of collections.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

A railway bridge leading nowhere stands lonely in the middle of a meadow.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

A museum dedicated to linguistics, from how babies learn to talk to endangered and extinct languages.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A psychedelic labyrinth on the San Francisco bay.

A secret door leads to this cozy dive that sells only “milk.”

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.