Where a demonstration led to equal rights for one of California's most marginalized communities.

This Alamo Square mansion is rumored to have hosted satanic rituals and other occult practices.

A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

A tribute to the artist and activist who created the rainbow pride flag.

The only town in the world with two exclamation points in its name.

This sprawling bookstore spans four floors and has more than a million books in stock.

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

This monumental work of art symbolizes the coming together of a previously divided city.

A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

A small town Romanian cemetery filled with darkly humorous gravestones.

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

Inside this art museum resides one of Glasgow's most famous musical instruments.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

One of the largest underground systems runs under Canada's largest urban center.

This antique shop specializes in the history of print and design.

This museum explores the history of the book, from scrolls to mass-produced objects through tools, stories, and massive cast-iron binding machinery (some of it operational).

Come for the speed, leave in love with the desert.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.