Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

A roadside spring pooling in an old bathtub where anyone can stop and sip.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

A miniature desert appears out of nowhere on the lush isle of Lemnos, like something out of a Greek myth.

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

A silly medieval mural preserved on the side of a Viennese house.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

An alternate history park where the Union Army loses the war... to dinosaurs.

A surreal statue honoring Prague's favorite literary son.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

People can't get enough of these adorable Japanese photobooths.

A painfully obvious spy house sits right across the street from the Russian Embassy.

The largest Chinese cemetery in the world outside of China dates back to the 15th century.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

A massive 1830s industrial site once known as Czechia's "Iron Heart" has been transformed into a playground of science, technology, and art.

A mysteriously abandoned campsite in San Angelo State Park.