I’ll go out on a limb: You’ve never driven anything like Trail Ridge Road. Top of the Rockies. From downtown Estes, it’s about 25 miles and takes a bit more than an hour if you don’t stop. Which you will. Stop everywhere, including Forest Canyon and Rock Cut. Stop at the Alpine Visitor Center, the highest-elevation visitor center in the National Park System. It has great exhibits on the alpine tundra, and hungry marmots outside. Take an easy walk (except for that pesky elevation thing) on the Alpine Ridge Trail, which is just over half a mile round trip.
From here it’s another 22 miles and about 45 minutes (without stopping, which, again you must) along Trail Ridge Road to the park’s western gateway at Grand Lake. Again, stop everywhere. Lake Irene is serene. Take a pic on both sides of the Continental Divide at Milner Pass. Each stop tells a different story of the park’s formation and evolution.
Turn around and experience the same drive in reverse back to Estes. It looks completely different. Depending on the time of year, watch the sunset from anywhere. Maybe even close to the summit at 12,183 feet.