A fascinating aviation museum where you can chat with the veterans who once flew the aircraft on display.

The mall's looks were inspired by the cowboy extras who used to meet up—and cause real trouble—at this Hollywood hub.

The unbelievably opulent home built for an infamous newspaperman.

A couple turned their front yard into an artistic masterpiece.

An inconspicuous footbridge beloved by San Diego locals.

North America's largest accredited model railroad museum.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

This stockpile of junked electronic and mechanical gadgets is a favorite among Hollywood prop masters.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Oldest building in California still in use.

One woman's Viking Castle on Lake Tahoe.

Towering basalt columns, a creation of fire and ice.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

This historic national park is covered in the stunning ruins of red rock pueblos.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Minnesota's oldest and deepest mine is now an underground physics laboratory.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

Quite simply the largest tree in the world (by volume).

Hundreds of hidden passageways weave through the old quarters of Lyon.

A world-class observatory in the California desert.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

The freeway that never was.