The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A "miracle" that seems to produce more holy fistfights than holy revelations.

A former seaside jewel built for the everyman is now simply a neglected art deco fortress.

The pioneering photographer's prints are immortalized inside her childhood home.

Tucked away inside a historic Savannah hotel is a hundred-year history presented in ladies' lids.

A notorious punk house turned co-op.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

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

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

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

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

A decommissioned military complex that's now a modern industrial park.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

San Francisco's newly reopened hands-on science museum.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

One of the oldest of its kind.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

In Egypt's expanding metro area, many of the neighbors are dead.

This historic hotel invented the chocolate brownie.

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