National Monument
Effigy Mounds
Best primary window for Effigy Mounds: September, with June and October as strong shoulder months.
State Hub
National Park Sites in Iowa
Iowa has no national parks on the official list of 63 (as of Oct 19, 2026). It has 4 National Park Service sites. They include 2 national historic trails, 1 national historic site, and 1 national monument (Effigy Mounds National Monument).
0National parks
4NPS sites
This state hub exists to compare National Park Service places in Iowa by available source and seasonal signals.
Featured Places
Explore top destinations across the state.
National Historic Site
Herbert Hoover
Best primary window for Herbert Hoover: September, with June and October as strong shoulder months.
National Historic Trail
Lewis & Clark
Best primary window for Lewis & Clark: July, with August and September as strong shoulder months.
National Historic Trail
Mormon Pioneer
Best primary window for Mormon Pioneer: September, with June and October as strong shoulder months.
All Places
Compare available seasonal planning briefs and source status for NPS places in this state.
National Monument
Effigy Mounds
Best primary window for Effigy Mounds: September, with June and October as strong shoulder months.
National Historic Site
Herbert Hoover
Best primary window for Herbert Hoover: September, with June and October as strong shoulder months.
National Historic Trail
Lewis & Clark
Best primary window for Lewis & Clark: July, with August and September as strong shoulder months.
National Historic Trail
Mormon Pioneer
Best primary window for Mormon Pioneer: September, with June and October as strong shoulder months.
NPS designations in Iowa
States in the Great Lakes region
Browse all state hubs or every NPS place.