NPS Photo National Park Service Effigy Mounds National Monument
ConfirmedFree entry — there is no entrance fee here, so you won’t need your pass to get in.
Guided ToursHikingFront-Country Hiking
NPS Photo National Park Service Browse by state
Iowa
14 sites · 3 agencies
NPS Photo National Park Service 
NPS Photo/John Eicher National Park Service Herbert Hoover National Historic Site
ConfirmedFree entry — there is no entrance fee here, so you won’t need your pass to get in.
Arts and CultureCraft DemonstrationsFood
NPS Photo / Alex Wiles National Park Service Lewis & Clark National Historic Trail
ConfirmedFree entry — there is no entrance fee here, so you won’t need your pass to get in.
Auto and ATVScenic DrivingBiking
American007 ( talk ) / CC BY-SA 3.0 · Wikimedia Commons U.S. Army Corps of Engineers Coralville Lake
CheckArmy Corps site — the pass gives 50% off day-use fees only and never covers camping. Confirm at the gate.
BikingBoatingHistoric & Cultural Site
US Army Corps of Engineers (Omaha) / Public domain · Wikimedia Commons U.S. Fish & Wildlife Service DeSoto National Wildlife Refuge
CheckThis U.S. Fish and Wildlife Service site may charge a fee your pass covers — confirm before you go.
Auto TouringBikingBoating
U.S. Fish and Wildlife Service / Public domain · Wikimedia Commons U.S. Fish & Wildlife Service Driftless Area National Wildlife Refuge
CheckThis U.S. Fish and Wildlife Service site may charge a fee your pass covers — confirm before you go.
BoatingFishingHiking
U.S. Fish & Wildlife Service
Iowa Wetland Management District
CheckThis U.S. Fish and Wildlife Service site may charge a fee your pass covers — confirm before you go.
Auto TouringFishingHiking
U.S. Army Corps of Engineers, photographer not specified or / Public domain · Wikimedia Commons U.S. Army Corps of Engineers Lake Red Rock
CheckArmy Corps site — the pass gives 50% off day-use fees only and never covers camping. Confirm at the gate.
BikingBoatingCamping
U.S. Army Corps of Engineers
Mississippi River - Pools 11-22
CheckArmy Corps site — the pass gives 50% off day-use fees only and never covers camping. Confirm at the gate.
BikingBoatingCamping
Peterwchen / CC BY-SA 4.0 · Wikimedia Commons U.S. Fish & Wildlife Service Neal Smith National Wildlife Refuge
CheckThis U.S. Fish and Wildlife Service site may charge a fee your pass covers — confirm before you go.
Auto TouringBikingInterpretive Programs
USFWSmidwest / Public domain · Wikimedia Commons U.S. Fish & Wildlife Service Port Louisa National Wildlife Refuge
CheckThis U.S. Fish and Wildlife Service site may charge a fee your pass covers — confirm before you go.
Auto TouringBikingBoating
US Army Corp of Engineers / Public domain · Wikimedia Commons U.S. Army Corps of Engineers Rathbun Lake
CheckArmy Corps site — the pass gives 50% off day-use fees only and never covers camping. Confirm at the gate.
Auto TouringBikingBoating
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