This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

This private residence was the template for one of the most beloved television homes of all time.

Visible below the waves are memorials to the city's Gold Rush dead.

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A psychedelic labyrinth on the San Francisco bay.

Statue dedicated to the star of an old television show.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

The only surviving prototype for Buckminster Fuller's house of the future.

In Grand Rapids, Michigan, a marker honors the creation story of a proud fictional culture.

Outside Grand Valley State University, you'll find a bench upon which many were said to have sat according to the fictional Kcymaerxthaere, waiting for a guide of time.

At HopCat, a marker honors fictional creatures with the ability to travel the missing dimensions of Kcymaerxthaere.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

America's only nuclear missile silo open to the public.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Come crisp December nights, this fairly plain neighborhood becomes a holiday dream world.

Legendary frontman of the Doors looms in this giant mural by famed Venice muralist, Rip Cronk.

This well-traveled chess park offers scenic views of the pacific and a colorful, eclectic clientele.