Click for more information on the Onawa Passport activities and directions on how to get there. Click for more information on the Brownville Passport activities and directions on how to get there. Click for more information on the Glenwood Passport activities and directions on how to get there. Click for more information on the Missouri Valley Passport activities and directions on how to get there. Click for more information on the Onawa Passport activities and directions on how to get there. Click for more information on the Sioux City Passport activities and directions on how to get there. : Leave I-29 at Exit 151 and proceed 4 miles north on Iowa Hwy 12. Follow the signs to Stone State Park and the Dorothy Pecaut Nature Center . The Nature Center ’s entrance is on the east side of Hwy 12. Click for more information on the Sioux City Passport activities. Leave I-29 at Exit 112 near Onawa, drive two miles west on Iowa Highway 175 to Park Loop Road, turn right and enter Lewis and Clark State Park a half-mile later. Click for more information on the Onawa Passport activities. Link to Western Iowa Tourism Region for other activities and events in Western Iowa. Click to visit the website for the Loess Hills National Scenic Byway. Leave I-29 at Exit 75 and go five miles east on US 30 to the Harrison County Historical Village and Welcome Center on the north side of the highway. Click for more information on the Missouri Valley Passport activities. Leave I-29 at Exit 35 and head east on US 34; exit US 34 at 221st St. going into Glenwood; about 1.5 miles later, turn right (east) at Sharp St. Pass the town square and half a mile later find Glenwood Lake Park . Click for more information on the Glenwood Passport activities. Leave I-29 at Exit 112 near Rock Port, Missouri and head west on Hwy. 136 for five miles to Brownville. Upon crossing the Missouri River Bridge, turn left into the Brownville State Recreation Area. Click for more information on the Brownville Passport activities.