The Dorothy Pecaut Nature Center in Sioux City is one of the cutest nature centers in Iowa and has a particular focus on the natural environment of the Loess Hills and Siouxland. It's totally FREE to visit, and a fun place to spend a day in any season, offering activities both indoors and outside. And it's one of my personal favorites. My kids and I have had so much fun at the nature center over the years! Here's what you should know about the Dorothy Pecaut Nature Center: Where is the Dorothy Pecaut Nature Center? The Dorothy Pecaut Nature Center is located at 4500 Sioux River Road in Sioux City, Iowa. There is ample free parking in their parking lot, but there is a gate that closes each afternoon. If you are planning to leave after it's closed, park in the small lot between the road and the gate instead of in the large lot near the nature center itself so you aren't trapped! The Dorothy Pecaut Nature Center includes the nature ce...