Macabre astrological automaton clock dating to the late 1400s.

A Jenga-style cylindrical tower of books that appears to go on forever.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A church of bones, decorated with 40,000 human skeletons.

A beautiful young girl said to have been buried alive in her coffin…

This historic, palatial theater is now one of the world’s most beautiful bookstores.

You have to know where to look in this rather ordinary-looking square to find hints of its past as a dissidents' cemetery.

This beautiful fountain was sculpted by a female artist who was ahead of her time.

A vibrant street away from the typical tourist track, lined with colorful, mosaic-covered houses.

A bright little alley in La Boca is a part of tango history.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Used as an example in one of the first dictionary entries for "museum" in 1706.

In addition to escorting prospective couples to and from ballrooms, this lane was also a place for gentlemen to settle scores.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The accidental discovery of this gilt bronze head led archaeologists to find the Roman Baths in the city of Bath

After protestors toppled a statue of a 17th-century slave trader, the pedestal where it once stood remains unoccupied.

This pedestrian footbridge honors Pero Jones, an enslaved African who lived in Bristol.

An authentic, seaworthy replica of the ship that sailed to Newfoundland in 1497.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

The castle still holds traces of the abandoned Roman fort it was built atop.

This small village museum contains the schoolboy scratchings of William Wordsworth.

This lovely Scottish nature walk leads to the source of a local legend.

The oldest church in Inverness witnessed the brutal executions of many Scottish soldiers.