A monument to the art of slicing people open.

A speakeasy takes on Chicago's drinking culture.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A lush green oasis in the middle of Chicago.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

A winding path built in secret on the edge of the continent.

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

The oldest dim sum restaurant in the United States is a nostalgic jewel.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

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

Only hotel where you can legally launder money.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

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

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

A promotional sun clock on the site of San Francisco's great raceway.

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

Golden Gate Park's historic collection of plants.

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.