1513 Turkish world map, full of European state secrets and snarky commentary.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

San Francisco's first World's Fair, dedicated to the wonders of California.

Thirteen trees representing the original thirteen colonies were planted with soil from historic Revolutionary battlefields.

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

San Francisco’s century-old Christmas Tree.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

27-room home built with the fortune of a sugar magnate.

Guns that have been defending San Francisco since 1904.

Art from the latest counter-culture; kids who dye their hair blue and believe the future will be a post-apocalyptic water world.

Once the site of speeding horses, now home to picnickers and public concerts.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

A monument to the love people have for their pets.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

This abandoned boat was left in place thanks to its rotting beauty.

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