Portlandia is the second-largest copper repoussé statue in the United States.

A miniature view of the park, caught in time.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

Golden Gate Park's historic collection of plants.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

A 300-ship graveyard, with a few still visible at low tide.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Tiki luxury on Nob Hill.

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

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

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A huge musical instrument played by the ocean.

This historic store hides a museum exhibiting a shoe-sizing x-ray machine and a pair of kicks that once belonged to the world's tallest man.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.