This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

This public space is speckled with the eerie remnants of a defunct amusement park.

Pennsylvania's own Roswell-style UFO mystery.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This collection honors the iconic, and proudly American lighter that just won't quit.

A failed piece of Orientalism has become the proud symbol of a community.

This might just be the TARDIS of bookstores.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

Journey through a collection of over 35,000 Halloween items from all generations.

These lush botanical gardens employ the most purrfect pest control force.

A glittering Thai Buddhist temple in suburban Pennsylvania.

A field of nothing but boulders which resembles a giant's gravel driveway.

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

It was once the base for a series of domestic terror attacks.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

A painfully obvious spy house sits right across the street from the Russian Embassy.

There’s a hidden military meme engraved on the World War II Memorial.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A historic neighborhood church is reborn as a psychedelic arts collective.

A psychedelic labyrinth on the San Francisco bay.

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.