There are free places in Panama City that you can visit, one of them the Panama Canal, hiking, museums and more.
Ancón Hill, natural viewpoint of Panama City, home to many fauna and flora. In addition to the largest flag in the country, it has a bunker.
The Miraflores Visitor Center, of the Panama Canal, offers exhibition rooms, theater, restaurants and of course, a viewpoint.
Barro Colorado Island, in Panama, is an island dedicated to the study of tropical forests. It has a plot to study the growth of trees.
At the Expanded Panama Canal Visitor Center, you can learn about the construction, see the huge ships and more.