Fall leaves in Smith Lake at Washington Park on Oct. 21, 2019 in Denver. (Photo by RJ Sangosti/The Denver Post) Look beyond Colorado’s shimmering yellow aspen trees for wonderful leaf-peeping ...

This year’s Arbor Day celebration will be in Paepcke Park on Saturday, June 8, from 9 a.m.-noon and will be a celebration of Aspen’s 30th year as Tree City, USA. The event will be complete with free ...

This Saturday, the city will celebrate Aspen Arbor Day at Paepcke Park from 9 a.m.-noon — the 31st year of these celebrations since being designated a Tree City USA city. Festivities will include ...

In higher elevations, the alpine tundra turns purple and deep red; throughout the park, aspen and cottonwood trees don their golds and oranges ahead of winter. 08 of 15 Yellowstone National Park ...

Along the way, hikers, mountain bikers and horseback riders may look west to see the 12,757-foot Mount Otto, the 13,101-foot Bushnell Peak and plenty of highly elevated aspen trees.

City Park’s new Nature Play project is finally moving toward completion Six years in the making, the $8 million project is expected to open this fall ...