When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

Curios, scientific antiques, oddities for sale.

See six states from the newly restored 100-year-old historic roadside attraction.

Drift through decades of high desert music history at this funky hometown museum.

A pair of gargoyles peer into unsuspecting passengers at Denver’s conspiracy-packed airport.

This stunning, technicolor array of geysers has occupied Ferril lake since 1908.

You can stand in three U.S. states at once.

Colorado’s second largest natural lake was created by a landslide.

This 28-foot-tall milk can contains one of the most whimsical ice cream parlors in town.

This swanky speakeasy is Denver’s oldest bar—and hasn’t changed a bit since 1933.

These murals from the 1920s beautifully depict America’s industrial age.

A testament to Colorado’s rugged mining history sits against a backdrop of striking mountain scenery.

This distinctive snowfield on the slopes of a Colorado fourteener has several legendary origin stories.

This notorious dive has been serving up both kinds of spirits since 1879.

Hike to the decaying remains of a dream house with a spectacular view.

Pieces of a stone giant are embedded in the earth of this Colorado park's playground.

For 14 years, this former stray dog greeted every train passenger that arrived in Fort Collins.

The first mountain submarine had its initial and last voyage in 1898.

This alpine statue of Jesus in Silverton is said to protect both miners and local economies.

The walls, tables, and much of the ceiling in this pizzeria are covered with $40,000 in $1 bills.

Fill up your senses in this beautiful riverside garden, dedicated to the works of singer-songwriter John Denver.

The start of the group that straightened the teeth of a nation.

This vintage theme park is peak Christmas kitsch—and it's open all summer.

When this 160-year-old church was being built, a stonemason included a hidden homage to his late daughter.