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

A naturally beautiful, seemingly bottomless deep blue spring.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Venice's "Island of the Mad."

100 year tradition of fist fights, marked by marble footsteps.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Where Venice's gondolas go for a tune-up.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

An enormous, inside-out glass globe built in 1935.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

The proud hometown of an American legend has honored their favorite son with what seems to be a gravestone.

The world's only and thus largest collection of its kind celebrates everyday wonder through simple umbrella sheaths.

A gas station and a state sign commemorating the most famous claims of extraterrestrial abduction.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

Come for the gun-toting hillbilly madman, stay for the ice-cream loving basketball bears.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A giant toy jack made of numerous welded-together fire hydrants.

Cryptid lake monster honored with its own monument.