This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

Millions of numbers carved in glass represent the tattoos forced upon victims.

Macabre astrological automaton clock dating to the late 1400s.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

Traditional 11th-century outdoor tannery.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

The quintessential Japanese rock garden has existed for more than 500 years.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

A tiny collection of traditional Japanese woodblock prints, open only when the owner feels like it.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

A magical place that lets you play in and explore the world of Studio Ghibli.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

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