Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Yo, Adrian!

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

Where America's first doomsday cult awaited the end of the world.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

A collection of artifacts from Maryland's maritime past.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

The first museum in the United States dedicated entirely to posters.

Cryptic messages embedded in the New York City sidewalk.

A collection of haunted objects and macabre oddities under one roof.

Here, exhibits come with a side of edible history.