Adventure Park USA is an exciting family entertainment center that is a 17.5 acre Western theme park featuring a 22,000 square foot building to accommodate indoor as well as outdoor adventures. Visit this year round amusement park located just south of I-70 for a ride on the outdoor carousel (open seasonally), as well as an indoor soft play area, laser tag, mini-golf, a rock wall, go karts, bumper boats and a giant arcade. Carousel rides are $2.00. Party Packages Adventure Park USA has the MOST WANTED birthday parties in Maryland, conveniently located off I-70 near Frederick and less than 45 miles from Washington, D.C. and Baltimore. Adventure Park is open year-round and offers a wide variety of activities and attractions for kids of all ages, making any child’s birthday a special celebration. Adventure Park USA offers private birthday party rooms, and each party is assigned a party host to assist you with your child’s party from beginning to end. Parties can be booked online or by calling 301-865-6800.