West Virginia’s Waterfall Trail has topped 125,000 check-ins in just two years, drawing visitors from all 50 U.S. states and 48 countries. This eco-tourism initiative lets travelers explore over 40 waterfalls statewide while earning prizes via a free digital passport. Created to highlight the state’s natural beauty, the trail promotes sustainable travel and community engagement—making it one of the most successful nature-based tourism projects in the U.S.