Estes Park, CO

There are more than 350 miles of hiking trails in Rocky Mountain park, but one of the prettiest is to Mills Lake, framed by pine trees and snowcapped peaks. It’s a 2- to 3-hour hike from Estes Park on a well-marked trail. You'll make several river crossings over wooden bridges. Stop partway for the roar and spray of Alberta Falls. Afterwards, return to the historic town for a ghostly tour and good eats.

More: Explore Estes Park