Glenwood Canyon, Canyon in western Colorado, United States.

Glenwood Canyon is a canyon in western Colorado that stretches along the Colorado River with towering walls of red and gray rock rising above the water. The riverbed cuts through layers of stone that tell the geological story of millions of years.

In the early 1900s, the Taylor State Road opened as one of the first automobile routes across the Rocky Mountains, linking remote communities. This pioneering road marked an important shift from horse-drawn travel to motor transportation through the region.

The name Glenwood comes from Glenwood Springs at the canyon's lower end, and the canyon floor still carries the routes that shaped settlement here: the Union Pacific line and Interstate 70 run side by side past the river. A dome-car monument to the California Zephyr once stood in the canyon before being moved to the Colorado Railroad Museum in Golden in the 1990s.

Multiple rest stops along Interstate 70 provide easy access to walking trails and the Colorado River without long drives. Visitors can stop at any point to explore sections of interest or enjoy views from the roadside.

A monument to the dome car design of the California Zephyr once stood in the canyon, since the canyon was one of the train's scenic highlights. In the 1990s it was moved to the Colorado Railroad Museum in Golden to clear the way for Interstate 70 construction. Foot access to the canyon is possible at four rest areas along the freeway.