16-17 to 17-18
|Seven Mountain ParksFootnote 1||8,946,690||9,207,562||3%|
|Marine Conservation AreasFootnote 2||1,485,881||1,604,533||8%|
|All other National Parks||5,016,678||6,021,801||20%|
|National Historic Sites||9,288,024||10,419,484||12%|
|Historic CanalsFootnote 3||3,921,660||3,853,967||−2%|
|All other National Historic Sites||5,366,364||6,565,517||22%|
Attendance is measured in Person-visits, which is defined as:
- Each time a person enters the land or marine part of a reporting unit for recreational, educational or cultural purposes during business hours.
- Through, local and commercial traffic are excluded.
- Same day re-entries and re-entries by visitors staying overnight in the reporting unit do not constitute new person-visits.