Travelers flock to Eureka, Missouri, for the thrills, spills, spins and plunges of the Six Flags St. Louis amusement and water park. You can also get your kicks at Route 66 State Park, a 419-acre scenic slice of the byway's history that provides plenty of biking, hiking and horseback riding opportunities. These diverse Eureka attractions draw thousands of visitors annually. After a day of riding roller coasters and soaking up nature, make room for more fun at a number of campgrounds in and within 20 miles of Eureka.

Jellystone Park Resort at Six Flags



Jellystone Park Resort at Six Flags (eurekajellystone.com) in Eureka is an action-packed facility with full-hookup RV sites and back-to-basics tent sites. If you prefer traveling light, the campground has glampsites -- large pre-pitched tents with air conditioning. Open from April to October, the landscaped campground has a snack shack, gift shop, camp store, laundry and sanitary dump station. Six Flags St. Louis is right next door, but when the theme park loses its thrill, take advantage of the campground's game room, playground, swimming pool, horseshoe pits, miniature golf course, and volleyball and basketball courts. Planned events are another highlight of the resort. Activities include pirate weekends, carnivals, hot dog roasts, luaus and tailgating parties.

St. Louis West/Historic Route 66 KOA



St. Louis West/Historic Route 66 KOA (koa.com) gives you another camping option in Eureka. Railroad buffs can book the restored red caboose, and traditional campers can pick from primitive tent sites, RV sites with hookups and comfortable cabins. Open from March to November, the campground has a host of recreational amenities, including a game room, playground, swimming pool, sports field and horseshoe pits. Six Flags is just a mile down the road, and St. Louis attractions, such as the Gateway Arch, the Anheuser-Busch Brewery and riverboat rides on the Mississippi River, are 30 minutes away.

Belleville Mobile Home and RV Estate



About 15 miles from Eureka in Fenton, Belleville Mobile Home and RV Estate (bellevillemobilehome.com) provides sites strictly for self-contained RVs and trailers. Besides full hookups, wireless Internet access and paved pads, the facility has few amenities. Shopping is nearby, and it takes 25 minutes to drive to such St. Louis attractions as the St. Louis Zoo, St. Louis Science Center and Grant's Farm (grantsfarm.com), a 281-acre estate formerly owned by Ulysses S. Grant. The farm, now an animal reserve that is open to the public free of charge, has kid-sized exhibits of more than 900 animals.

Pin Oak Creek RV Park



Pin Oak Creek RV Park (pinoakcreekrvpark.com) in Villa Ridge has a variety of camping options 17 miles from downtown Eureka. Cruise in with your big rig, go primitive and pitch a tent, rent a rustic cabin or book a one-room bunkhouse that accommodates 12. For more creature comforts, a double-wide mobile home is also available. You can keep active at the miniature golf course, volleyball area, basketball courts and game room. If water activities call your name, practice your backstroke in the outdoor swimming pool, or gather up your rod and reel for some catfish, crappie and bass at the license-free fishing lake. As an added bonus, try honing your shooting skills at the on-site paintball area.