This golf ball–shaped former desert real estate office now houses a UFO museum.

The fading, forgotten remains of a once bright and booming factory.

Don't blink or you'll miss it.

Monsters and miniatures are held in equal esteem at this wondrous museum.

A virtually untouched "home on the hill" for the flora and fauna of Rhode Island.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

A rare view of a preserved Victorian science museum.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

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

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Dr Barnes' $25 billion private collection of art and arboretum.

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

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

The abandoned coal loading dock is a canvas for unsanctioned art.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Hidden behind West Philadelphia rowhomes is a haven for migratory and local bird species both ordinary and rare.

These medicine cabinet staples are part of the museum's collection of everyday objects.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.