Indents in the pavement are all that remain from a grisly death machine in Paris.

The two-cell building in Nebraska was briefly owned by a teenage boy and then a Hollywood dummy.

The stunning interior of this Gothic church is covered in ornate gold details.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

One man's eclectic collection of treasures found at sea.

This magnificent Cincinnati graveyard is also a popular public park.

The inventor of the iconic Pringles can was so proud of his invention he was buried in one.

The final resting place to 300 Victorian-era pets hides inside the city park.

Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

A headstone notes where the most famous of Robin Hood's legendary Merry Men is reportedly buried.

Hidden beneath the streets of London is a secret subway that only carried mail.

A plaque outside the San Jose airport commemorates the insect's arrival to the West Coast.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

The only diamond mine in the world where you can keep what you find.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

A statue of the original Pearly King is hidden in a church's crypt.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

The British monarchy's stamp collection is one of the most impressive in all of Europe revealing generations of royal nerdery.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.