A town trapped in time - 1958 to be exact.

The collection is exhibited in a Staten Island building modeled on traditional Himalayan architecture.

What looks like a birch tree smushed between two pieces of glass often confounds commuters.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

A concrete Picasso in the middle of a student housing complex on the outskirts of Stockholm.

A wooden street sign is the last remnant of this 400-year-old alleyway.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

Every Tuesday, students let off steam by screaming into the night air.

Stockholm's last remaining paternoster elevator.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

The oldest garden in Prague, once part of an medieval orchard.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.