A quiet nook at the top of a little-known hilltop park named after California's first poet laureate.

This mysterious marker puzzles pedestrians and infuriates geographers.

This postmodern apartment block was designed to be a vertical neighborhood.

This retro underwater observation tower would make the perfect lair for a sea-loving villain.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

Early prototype for Frank Lloyd Wright's Guggenheim.

San Francisco's most expensive hotel suite includes a secret passageway rumored to have been used by JFK.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Advice-columnist's bell tower, paid for with pennies.

This public baseball field is a beloved remainder from of one of the most historic stadiums in the country.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

The world’s highest ski resort was deserted after an 18,000-year-old glacier melted away.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Opulent downtown movie theater now houses cars as an indoor parking garage.

Abandoned concert venue legendary for its rock counterculture.

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

This rare archive of original recordings and photos uncovers the early days of hip hop culture.

This well-traveled chess park offers scenic views of the pacific and a colorful, eclectic clientele.

A reminder to choose water over wine since 1888.

The greatest real estate coup of all time.

Down a stairway in the East Village, you could once read a plaque describing an alternate history of a fictional version of Manhattan.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.