Chattanooga has officially picked up a surprising label: it's now the first National Park City in North America, a designation handed over by the UK-based National Park City Foundation in April 2025. It joins London, Adelaide and Breda, Netherlands, as one of only four cities worldwide to earn the title - and it's a long way from the 1969 headline when Walter Cronkite told the nation Chattanooga was the 'Dirtiest City in America', with air pollution three times over federal safety limits.
The turnaround started with a 1969 Air Pollution Control Ordinance and snowballed over the decades. Moccasin Bend, a 768-acre park holding evidence of 12,000 years of human habitation, became the US's first National Archeological District in 2003. The Tennessee Aquarium opened in 1992 and transformed the industrial riverfront into the city's gathering place. Its Conservation Institute now breeds endangered species like the red-bellied laurel dace and has released over 400,000 lake sturgeon back into local waters.
The biodiversity here is genuinely remarkable. The Tennessee River holds more than 1,400 aquatic species - roughly three-quarters of all native US fish species and over 90% of American mussel and crayfish species. The surrounding city claims 220-plus native plant species and more than 100 bird types.
For visitors, the practical upshot is a compact city where the outdoors is minutes away. Within a 15-minute radius you'll find over 150 miles of hiking and mountain biking trails threading into the Cumberland Plateau and Appalachian foothills. The 16-mile Tennessee Riverwalk runs along the river's southern bank through downtown, and there are plans for fishing piers, better seating and riverfront dining starting at the end of the year. A new 15,000-square-foot inclusive playground opened in September, and the city library lends out camping and hiking gear free for up to two weeks - handy if you're flying in with just a backpack.
One of the more intriguing spots is Maclellan Island, a 24.5-acre wildlife sanctuary in the Tennessee River directly across from downtown, with a mile-long dirt trail frequented by osprey, cormorants, raccoons and six invasive-species-munching goats. The Chattanooga Audubon Society is rewilding the island, and a renovated bunkhouse is set to open this fall, with a botanical garden and gazebo to follow - meaning you'll soon be able to overnight in a forest in the middle of downtown.
Chattanooga suits travellers who want an active city break with a low-key vibe: kayak under the historic bridges in the morning, visit the aquarium in the afternoon, hit a trail before dinner. With 5,600 residents having signed the city's National Park City charter, the community buy-in is real - and it shows in how easy the outdoors is to reach from your hotel room.
