Hells Canyon National Recreation Area
National recreation area on the borders of the U.S. states of Oregon and Idaho.
Each edition grades its towns against each other only.

Around 344K people visit Nez Perce National Historical Park each year. All of it lies outside: 3 places within 40 miles, none inside Lewiston. They include a stadium & arena, a national historical park and a garden. For a full day, there is Hells Canyon National Recreation Area, 60 mi away.

Multi-state U.S. National Historic Park.
The towns around it, and where to stay →
The map puts most of the 3 to the north.
Orange: Lewiston. Numbers: the best-known places, matching the list below. © OpenStreetMap contributors
These 6 are within 60 miles, none in town.
National recreation area on the borders of the U.S. states of Oregon and Idaho.
Multi-state U.S. National Historic Park.
Arboretum and botanical garden.
Ranked by how many people look them up, so the famous places lead and the local favorites follow.
Parks and trails in Lewiston → · Lewiston’s history →
Hells Canyon National Recreation Area: X-Weinzar, CC BY-SA 2.5 · Martin Stadium: Jdubman, CC BY-SA 3.0 · Nez Perce National Historical Park: NPS, Public domain