An unassuming stone building houses New York City's oldest seismic station almost 30 feet below the Bronx.

This unusual subway stop was originally a real estate office.

A small graveyard is hidden in the midst of a bustling university campus.

These small stands sell Malian snacks to worshippers and passersby after Friday prayers in Harlem.

A hidey-hole sandwiched between cellphone, DVD, and jewelry stores features Tibetan delights.

This small, hidden cove is home to abandoned boats.

Serving Central Asian breads that range from cracker-crisp to warm and fluffy, this bakery brings Bukhara to Queens.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

The largest guitar store in the world has been visited by some of music's all-time greats passing through upstate New York.

The floor-to-ceiling collection in an old factory is a unique alternative to stuffy galleries.

A room hidden behind a swinging shelf in the children's section.

A collection of the best toys ever made, The National Toy Hall of Fame is filled with kids, fun, and for some reason, a bird preserve.

Comprehensive gaming collection of over 30,000 electronic games and consoles.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A huge musical instrument played by the ocean.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

The Giant Lemon of Lemon Grove.

A Biblically-based Natural History Museum.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

This Pringle-shaped ledge makes for the perfect photo op.

This large collection of tiny things revels in the art of fine machinery well made.

This unique sanctuary invites you to interact with the beautiful birds.