It was a quick visit to Panama City, but I was able to explore a good portion of the city.
Panama City feels like a city rooted in its Panamanian culture with a focus on commerce and development. That is quite evident in how the financial district of the city seamlessly transitions to the Old Town. There has also been concerted effort to develop the city's waterfront, with a massive environmental clean up of it and the development of bike/running lanes all along the water. The city's boardwalk sees a good mix of open spaces and parks with families and health conscious people all using it.
Although I opted not to take a tour of the Panama Canal, the importance of it can be seen from anywhere in the city - with ships queuing in the Panama Bay as they await their turn to go from the Pacific to the Atlantic and vice versa.