Even out-of-towners know that the grounds of the Gateway Arch are worth a visit. But only tourists with in-the-know hosts are lucky enough to learn about the other iconic site in the area for sculpture and monument — and it, too, is completely free! The bucolic 105 acres of Laumeier Sculpture Park are home to art fairs, live music and movie nights in the summertime, as well as plenty of amazing larger-than-life sculptures on the park premises and throughout the woods year-round. Feel free to tell that grumpy uncle of yours to go take a hike. He'll like it.