This underrated Denver park has an impressive amount of attractions that will keep active families busy year-round, from dusk until dawn. When the sun's shining, do a few bike tricks at the Ruby Hill Bike Park before exploring trails and open fields or swinging the bat at the baseball field. Younger kiddos can romp around a massive playground located at the park's peak. Come winter, you'll find plenty of sledding hills throughout Ruby Hill Park, and when the snow really starts accumulating, check out the Ruby Hill Rail Yard, an urban terrain park that draws thousands of folks annually. Bring a sack lunch and take a break at the picnic tables while taking in some great views.