Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

No one messes with the Massachusetts sacred cod, not this time...

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

These whimsical works of art tell the story of the city's past and present.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

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

Museum dedicated to awful artwork.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A beautiful Victorian-era cemetery, complete with a miniature village.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

A museum dedicated exclusively to the lore and history of ouija boards.

The headquarters in Salem doubles as an occult art gallery.

Like stepping into a spooky fairy-tale, this shop carries the dark ideas of artists and other makers.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

Dedicated to the man who saved hundreds of children from Nazi-occupied Czechoslovakia.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.