For Kids:

1. Flat Rock Park: Natural rock formations and hiking trails.
2. Columbus Riverwalk: 22-mile linear park along the Chattahoochee River.
3. Oxbow Meadows Environmental Learning Center: Nature trails and wildlife viewing.
4. Cooper Creek Park: Playground and walking trails.
5. National Civil War Naval Museum: Free admission days throughout the year.

For Adults:

1. Columbus Museum: Free admission to explore art and history.
2. RiverCenter for the Performing Arts: Free performances in the lobby.
3. Coca-Cola Space Science Center: Free admission on certain days.
4. Heritage Corner: Self-guided tour of historic homes.
5. Market Days on Broadway: Saturday farmers market and craft fair.

These cities offer a wealth of free activities for both kids and adults, from beautiful parks and nature preserves to museums and cultural sites. Whether you’re a local or a visitor, these attractions provide great opportunities to explore and enjoy without breaking the bank.