Panorama exhibition hall in old silent theater with a beautiful backyard garden.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

A lonely Gondola stuck on a traffic circle sits in a spot where it once would have floated down the Grand Canal.

A museum of carnival attractions where you are invited to ride the rides.

This nonsensical smiling boat shuttles passengers between two places they could've easily walked between.

This historic graveyard was partially paved over to create a streetcar line.

A unique local art exhibit that has continued to grow since 1989.

One of the world's largest collections of rare and magnificent bird specimens.

Los Angeles's oldest cemetery allows visitors to trace the history of this proud city.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The home of one of California's most important horticulturalists wilts amidst a lovely park.

This little gem of Spanish Colonial architecture has been abandoned since the 1950s.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

Half of a house.

Guns that have been defending San Francisco since 1904.

A famous alternative culture epicenter and where Joplin serenaded young hippies.

A hidden subterranean installation offers a view of the sky.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

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