A winding district gerrymandered into the shape of a mantis.

This failed condo development was reborn as a street art hub.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This mouldering abandoned mental hospital was once a center for progressive healing.

"A hideous albatross in the Hudson River Valley."

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Toxic waste disaster that founded the Superfund program.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

The seat of Buffalo government is a gorgeous Art Deco palace.

The absurd creation is a compulsory destination for selfies in Buffalo.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

A monument celebrating the idea of reaching inaccessible places.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A nostalgic bibliographic gem.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.