The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

This historic Chinese tower was said to have been haunted by fox spirits but is now haunted by a grisly murder.

This sensational Chinese temple walks visitors through the 76 weird departments of the afterlife.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

This abandoned sea fort has become an accidental bird sanctuary.

This dramatic rail curve was once the target of a failed Nazi attack.

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

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.