Huge masonic hall in Philadelphia with lavishly themed rooms.

The world’s first penitentiary, meant to be humane, drove men insane.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

This chimerical bridge/tunnel appears to dead end right into the sea.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

20,000 pieces in a Frank Gehry-designed building.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Catacombs turned marketplace.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The only arched bridge made of stone on the entire Mississippi River.

The first American department store, and home to the largest operating musical instrument in the world.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A terrific purveyor of natural history objects and curios.

Copenhagen's celebrated theme park and gardens.

A museum dedicated to the exploring past, present, and future innovations.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The most confusing clock in New York.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.