A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.

A freedman baker’s lavish tomb has a relief showing various stages of Roman bread making.

This room of wonder is full of relics, from knights in armor to rare works of art.

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

The remains of a ruined mansion memorialize the 1906 earthquake.

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.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

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

Olfactory delights in San Francisco's Botanical Gardens.

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

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

The restored and active Victorian-era final resting place of San Francisco.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Early prototype for Frank Lloyd Wright's Guggenheim.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

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

Reverend Franzo Wayne King administers spiritual enlightenment through the music of the jazz legend.

Inside this museum, the history of the Walt Disney Family empire is on full display.

America's oldest Italian restaurant is a San Francisco institution.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

This contorting sculpture is the tallest in San Francisco.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.