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

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

This nonsensical smiling boat shuttles passengers between two places they could've easily walked between.

A second generation sun-powered marvel lights up the night.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

The real faces of Venice beach captured on Romanesque columns.

A black and white mural stands out from its psychedelic surroundings.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

This museum offers an actual time machine back through Colorado's past.

This sidewalk tribute honors Colorado's great culinary creation.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A house carved into a rock in the 1940s.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The blinking light atop the iconic landmark has been sending secret messages for decades.

60 feet of towering steel balances gracefully.