Castlewood Canyon State Park
Castlewood Canyon State Park near Franktown, Colorado has wheelchair accessible trails as well as more difficult hikes into the canyon. The park is the site of the Castlewood Dam which burst in 1933, sending the waters of Cherry Creek into Denver in a 15′ wave. Leashed pets are welcome on most trails. The east side, where the Visitor Center is, has two concrete-paved trails, picnic tables, an amphitheater, and an easy walking trail. Here is their website. Trails Map Phone 303-688-5242
The Canyon View Nature Walk is 1.2 miles between parking lots and is ADA accessible.
The Bridge Canyon Overlook trail is 400 ft one way.
The first few hundred feet of so of the Lake Gulch trail, leading north from the parking lot has spectacular views of Pikes Peak. Eventually it drops down in a set of difficult steps.