After a century, America’s national parks have become so popular that they are in danger of being smothered by affection. Many people struggle to visit a national park without making heroic planning efforts, booking reservations many months in advance, and incurring significant travel costs. How can we save wildlife and historical treasures in parks struggling to survive onslaughts? This saga has the makings of a classic story arc—Good Deed > Collapse > Escalation—but only if we can reinvigorate National Park System stewardship to ensure humanity’s heritage survives unimpaired in parks as intended by our ancestors.