Valmont Bike Park will open in Boulder, Colo., in June 2011. The 40-acre bicycle park, within the 132-acre park site, is especially exciting for the city's huge cycling community. The park will have all the usual details: eco-friendly toddler areas, dog parks and fields for picnics, but it will also feature more than 30 bike trails, trick spots and jump-offs for people to enjoy — all while using renewable resources to conserve electricity and the environment.