6684 Crystal Lake Cave Road | Dubuque, IA 52003-9504 | 563.556.6451

A Great American Show Cave, this is a natural living cave with a panoramic view of beautiful, intricate, and rare formations. Open May through October. Gift shop, picnic grounds and informative guided tours.

3800 Arboretum Drive | Dubuque, IA 52001 | 563.556.2100

Developed and operated entirely by volunteers. Free admission. Displays of hostas, formal herb garden, woodland wildflowers, water and shade gardens, ornamental tree and shrub collections, rose gardens, annuals and perennials. Visitor Center with gift shop and botanic library.

5754 State Road 23 | Spring Green, WI 53588 | 608.935.3639

An amazing array of unique collections and exhibits including the world's largest carousel, music machines like the mikado, a giant sea creature, dolls, dollhouses and much more. Open year round.

350 East Third Street | Dubuque, IA 52004-0266 | | 563.557.9545

Iowa's Number One Attraction! New expansion opening in 2010 to include the history of all American rivers, a 30,000 gallon Gulf of Mexico aquarium, and a 3D/4D digital theater. At the National Mississippi River Museum & Aquarium you can enjoy dynamic aquariums, historical exhibits and a stroll through the wetlands and boatyard. Each visit is a truly interactive experience where visitors can get "up close and personal" with live critters, become barge pilots, tour the national landmark steamboat William M. Black and watch as a boat is launched into the Mississippi River. Open year round.

4900 Peru Rd | Dubuque, IA 52002 | 563.556.0985

The Four Mounds Ropes Course is the perfect outdoor fun event for any occasion. Many exciting activities including, Giant Swing, Flying Squirrel, Zip Line, Swinging Log, Two Line Bridge, Pamper Jump, Bosun's Chairs.