Whitman Mission National Historic Site
National Historic Site of the United States.
Each edition grades its towns against each other only.

Yearly visitors to Nez Perce National Historical Park number about 344K. With nothing inside Summerville, the list has 3 places within 40 miles. They include a national historical park, a ski area and a museum. Make a day of it at Whitman Mission National Historic Site, 44 mi away.

National Historic Site of the United States.
The towns around it, and where to stay →
The map ends at Nez Perce National Historical Park, 39 mi out.
Orange: Summerville. Numbers: the best-known places, matching the list below. © OpenStreetMap contributors
Nothing is inside Summerville itself; these 9 are within 60 miles.
National Historic Site of the United States.
Large water gap of the Columbia River through basalt anticlines in the U.S. state of Washington.
Multi-state U.S. National Historic Park.
Ranked by how many people look them up, so the famous places lead and the local favorites follow.
Parks and trails in Summerville → · Summerville’s history →
Whitman Mission National Historic Site: National Park Service, Public domain · Wallula Gap: Williamborg, Public domain · Nez Perce National Historical Park: NPS, Public domain · Anthony Lakes Mountain Resort: Sadie_Girl, CC BY 2.0 · National Historic Oregon Trail Interpretive Center: John-Luc Metz, Bureau of Land Management Oregon and Washington, Public domain · Tamástslikt Cultural Institute: Decumanus at English Wikipedia, CC BY-SA 3.0