A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

A monument to the love people have for their pets.

This private residence was the template for one of the most beloved television homes of all time.

In this century-old literary safehouse, print is alive and well.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Olfactory delights in San Francisco's Botanical Gardens.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A psychedelic labyrinth on the San Francisco bay.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

A rare view of a preserved Victorian science museum.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

The school tested mustard gas for the U.S. Army during World War I.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

Walk through the history of American pop culture.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

A hidden alley in urban Baltimore is a haven for graffiti artists.