Estes Park, Colo., the so-called base camp for Rocky Mountain National Park, is home to abundant inexpensive outdoor experiences. Drive to heights of 12,000 feet on Trail Ridge Road, stopping for photo ops at overlooks. Snowshoeing often is possible into spring and then comes hiking on more than 350 miles of trails. Keep your eyes (or binoculars) peeled for elk, moose and bighorn sheep. Check online for free entry dates, and consider staying at the YMCA of the Rockies, where lodging — ranging from comfortable rooms to cabins that will house multiple generations — starts at less than $100. Movie buffs will want to see the century-old Stanley Hotel, where Stephen King stayed in supposedly haunted Room 217 and was inspired to write The Shining. Take the Stanley’s popular paranormal tour.