Effigy Mounds National Monument
Hours
See this week's hours below.
- Entrance fee
- The Park Service lists no entrance fee for this site.
- Phone
- 5638733491
- Address
- 151 Hwy 76, Harpers Ferry, IA 52146
About Effigy Mounds
The mounds preserved here are considered sacred by many Americans, especially the Monument's 20 culturally associated American Indian tribes. A visit offers opportunities to contemplate the meanings of the mounds and the people who built them. The 200 plus American Indian mounds are located in one of the most picturesque sections of the Upper Mississippi River Valley.
Hours
Park Hours
Park trails are open daily from dawn to dusk.
| Monday | Sunrise to Sunset |
|---|---|
| Tuesday | Sunrise to Sunset |
| Wednesday | Sunrise to Sunset |
| Thursday | Sunrise to Sunset |
| Friday | Sunrise to Sunset |
| Saturday | Sunrise to Sunset |
| Sunday | Sunrise to Sunset |
Getting there
Located 3 miles north of Marquette, Iowa on Hwy 76.
Weather
All four seasons are represented in this area with summer temperature in the upper 80’s with higher heat indexes due to humidity and winter daytime highs in the 20's. Temperatures are in °Fahrenheit.
Things to do
Birdwatching, Bookstore and Park Store, Front-Country Hiking, Guided Tours, Hiking, Junior Ranger Program, Museum Exhibits, Shopping, Wildlife Watching.
Source: National Park Service data feed, checked September 24, 2026. Hours shown are the Park Service's posted standard hours plus any date changes it lists. Official page for Effigy Mounds ↗