What is it about mushrooms that makes people wish they lived inside of them?

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

A castle built by an eccentric medieval enthusiast in rural Ohio.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

How did a massive marine arthropod find its way to landlocked Ohio?

An idle pastime becomes a record holder in Boys Town, Nebraska.

This erect, phallic geological spire wasn't always named so domestically.