This abandoned sea fort has become an accidental bird sanctuary.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A hidden alley in urban Baltimore is a haven for graffiti artists.

The land is home to swimming ponies and a legendary 18th-century treasure.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

An eerie, decaying ghost town destined to fade into the forest.

This free, take-a-book shop seems like a trick but isn't.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The trials and tribulations of marking Poe's grave.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

A porcelain company's former dumping ground, completely covered in pieces of collectible ceramics.

Spiral labyrinth hidden in the hills above Oakland, CA.

Travelers exchange letters with woodland creatures at this mini post office.

An abandoned Cold War missile radar site.

A sculpture dedicated to Napa Valley's oldest mineral water company.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

Wheels of chrome by the thousands adorn this California Historical Landmark.