The Ryerss mansion in Burholme Park now houses a community library and a museum filled with a trove of oddities from around the world.

Step into a pastel time capsule where candy is truly dandy.

The first American department store, and home to the largest operating musical instrument in the world.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

A layered tribute to the work of mosaicist Isaiah Zagar.

World's first "penitentiary," meant to be humane, drove men insane.

This storied music venue was once a tavern that housed an Italian Anarchist book club and prohibition parties; today it's a community space for artists and musicians.

A place to eat for on-the-run agents and espionage enthusiasts.

A jagged silhouette of shamanistic stone heaps rises from the shore of this dazzling mile-high lake.

An exceptional assortment of fossils recovered from private collections.

Dinosaur eggs were first discovered at these fiery red cliffs.

Mongolian Buddhists believe this monastery in the Gobi desert to be the center of the world's spiritual energy.

An institution dedicated to curiosity, logic, riddles, and Mongolia's long history of puzzles.

The oldest Buddhist monastery in Mongolia has survived centuries of invasions, political shifts, and religious purges.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.

The grassy landscape is home to the world's last truly wild horses.

Asia's largest limestone cave is home to a world of plastic goblins and gold mining history.

Tracking the 1,500-year history of Korea's star cabbage.

A Milwaukee museum provides an unsparing and ultimately empowering look at the Black American experience.

Meet the "Green Monster" of Monico, Wisconsin.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.