This stone marker honors the man who released Canada goose goslings in Fort Collins, Colorado.

After being lost for nearly a century, this historic bell finally returned home after its mysterious theft.

Victorian "Fancy Craft" Hair Wreaths and Relics.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

This spectacular track has run continuously since 1882.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A sculpture for the sun and stars, created by Nancy Holt.

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

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This geothermal hot spring hides beneath a slowly growing mineral dome.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

This massive home was constructed by one of the greatest conservationists in Colorado history.

This 19th-century ranch is being transformed into a residential library with thousands of books about the natural world.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

An ADA-accessible trail and deck offering stunning views of Colorado’s Mount of the Holy Cross.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

A prehistoric rock shelter that's literally in someone's backyard.

The remains of an early 1900s dude ranch that operated until the 1970s.

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

Two creeks flow out of either end of this canyon in opposite directions.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.