Find great value on Airtran Airways flights from ATL to DEN when you book with CheapOair! Denver beckons with its continental climate, rocky mountain ski slopes and magnificent combination of urban sprawl and nature. It is the capital of the U.S. state of Colorado. Take your kids out for a fun-filled day at the Lakeside Amusement Park. Known as the largest amusement parks in the Rocky Mountains, it is home to over 40 rides that include cyclone roller coaster, steam powered miniature train and more. Various carnivals and arcade games are also a major part of this amusement park. If you are more interested towards nature and science, then do visit the Denver Museum of Nature and Science. Established in 1900, it display exhibitions on natural history of earth, universe and Colorado.