Visible below the waves are memorials to the city's Gold Rush dead.

The only visible piece of San Francisco's most famous shipwreck.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Sporting Brutalist architecture, this school is hidden amid a quiet suburban neighborhood.

This 19th-century Turkish bath house survived the Blitz of London and is now an events venue.

Internationally-recognized arts center housed in a century-old former military barracks.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

Guns that have been defending San Francisco since 1904.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

A living time capsule of the 1960s Richardson Bay water-front.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

The longest covered bridge west of the Mississippi River.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

This bakery sells traditional Māori sourdough.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

Art Deco stylings conceal the true nature of this bridge.

This bronze boy sits on one of Capri's rocky cliffs, waving at the passing boats.

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.