An acoustic anomaly with a mysterious cause.

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

In the middle of a remote desert town is a surprisingly opulent hotel.

An errant donkey ushered in a new era of mining in Nevada.

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

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

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

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

A lonely Gondola stuck on a traffic circle sits in a spot where it once would have floated down the Grand Canal.

A spiritual vortex among the red rocks in Sedona.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The king of U.S. high points towers over every other peak on the continent.

A trading post in the North Pole where children send letters.

One of two side-by-side totem pole parks dedicated to educating visitors on Tlingit history and culture.

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

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

Fossils, railroads, and waterfalls!

This natural wonder is disappearing at an alarming rate.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

Roadside collection of 65,000 signs.