If you are in Panama City, don’t miss going to Casco Viejo. Lots of neat things to see there. The Panama Canal museum is there and lots of Colonial architecture. It’s like taking a time machine back to the past. Not all of Casco Viejo is safe to walk around in, but there are plenty of tourist police to make sure you don’t stray into the dangerous parts of town. Just use common sense and leave your fancy stuff at the hotel.