This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

A collection of unique outdoor sculptures surounded by the beauty of nature.

A natural gas leak provides a flickering flame beneath a waterfall.

Bouncing, delightful, mechanical art at the MIT Museum.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Death rituals and sacrifice inside a Peruvian megalith.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The little bear in the "funny kind of hat" has made his way from London back to Peru.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This doorless 20th-century elevator doesn't stop or slow down.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This unusual elevator doesn’t stop or slow down.

The silly symbol for an underground protest group is now scattered around the city.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This 13th century Gothic brick castle is the largest in the world by surface area.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

The last king of Poland was interred in this church nearly 200 years after his death.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

This Minsk museum has cat coffee, cat chess, cat art, and even a cat "staff," which visitors are free to take home.