The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Old Danish castle immortalized in Shakespeare's Hamlet.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

Handsomely crafted representations of our round planet.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

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

Two stone columns flank the grand Venice square, but there were supposed to be three.

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

Go inside to really appreciate this 500-year-old technological masterpiece.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

The headquarters in Salem doubles as an occult art gallery.

A colorful architectural gem in Seattle's uniquely modern Central Library.

The beautiful baroque library of the Hapsburg empire.

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

The middle finger of modernity.