This is a cumulative list of the best things to see and do in Colorado, from our several trips to this absolutely amazing state.
1. Rocky Mountain National Park
This park offers something for everyone. It is full of amazing hikes, long and short, with no shortage of spectacular waterfalls, mountains, lakes and wildlife. Several of its scenic drives are some of the best in the country. You can spend a week here and still not see all the amazing sights this park has to offer. It is also a short drive from Estes Park.

Nymph Lake, Rocky Mountain National Park.
2. Mesa Verde National Park
This park really surprised us. Not only does it offer unbelievable views of mountains, it showcases some incredible ancient dwellings preserved through time. Even though we were not able to hike here, we enjoyed our visit enough to want to go back again.

Cliff dwellings at Mesa Verde.
3. Telluride
One of the best mountain towns in Colorado. Telluride boasts nature, hiking, outdoor activities, free gondola rides with gorgeous views, a great food scene, art and culture.

The free gondola, dog included.
4. Bridal Veil Falls
This is the tallest waterfall in Colorado. The hike offers amazing views of the Rocky Mountains and a couple of smaller waterfalls along the way. You can make it longer by hiking up to the power plant on the cliff. The same path can be driven in a 4x4, if you have off-roading experience.

Bridal Veil Falls, the tallest in Colorado.
5. Royal Gorge Train
This train ride follows the Royal Gorge alongside a gushing river. Mountain views, rivers and fresh mountain air can be enjoyed from the open-air carriage. The train has a snack car and offers meal service as well. This ride was perfect for our railfan son.

Riding along the Royal Gorge.
6. Million Dollar Highway
Driving this stretch of mountain road is a must in Colorado. The views are simply unbeatable. We did not find it quite as sketchy as we had read. The drop-offs are steep, with grand vistas anywhere you look.

On the Million Dollar Highway.
7. Independence Pass
We found this drive incredibly beautiful as well. The pass begins after the Twin Lakes area, which is gorgeous too. There is a viewpoint along this drive that we regretted not stopping at. The sheer cliffs and tree-covered valleys were just spectacular.
8. Aspen Silver Queen Gondola
We took several gondolas in Colorado. This one was by far the best (and the most expensive). It climbs higher than any of the others we rode and offers amazing views of the Aspen mountain range. We especially liked that this mountaintop was kept for nature lovers to take in the views, hike, or ski in winter, and not made into an amusement park like some of the other gondolas.

At the top of the Silver Queen Gondola.
9. Pikes Peak
This historic cog railway to the summit of Pikes Peak is a must for any Colorado itinerary. The ride weaves through the mountain’s climate zones on its way to the summit. There is a gift shop and restrooms at the top.

The Pikes Peak cog railway.
10. Maroon Bells
This is the most iconic view in Colorado. During the summer there is no parking at the Maroon Bells trailhead, so getting here means a bus ride from Aspen Highlands. The epic viewpoint itself is only a short walk away, though there are some spectacular trails if you want to immerse yourself in the beauty of the area a little more.

The walk toward the Maroon Bells.
11. Leadville train ride
This train is not a luxurious one, but it more than makes up for it with the views. It passes several fourteeners (mountains over 14,000 feet) and beautiful alpine vistas. It is a perfect way to enjoy this area.

The end point of the Leadville train ride.
12. Hoosier Pass hike
This hike begins from a trailhead a short drive from Breckenridge, surrounded by peaks, valleys and wide-open views. With the altitude, we got a little taste of the more challenging hikes Colorado has to offer.

Up high on the Hoosier Pass hike.
Bonus: Estes Park
This town is the gateway to Rocky Mountain National Park, and a charming mountain town that offers something for everyone. It has a beautiful lake for boating, a bubbling stream running right through downtown, many awesome restaurants, the (haunted) Stanley Hotel, lots of elk, and hanging flowers everywhere.

Elk in downtown Estes Park.
Bonus: Ouray
We only spent a short time here, but this town is definitely not short on beauty and adventure. There are waterfall hikes to enjoy, as well as the loop around the entire town. A hot spring, a box canyon and some gorgeous viewpoints are here as well.

Cascade Falls in Ouray.