Step back in time at Panamá Viejo, the original site of Panama City founded back in 1519. You can wander through the impressive archaeological ruins of what was the first European settlement on the Pacific coast. Don't miss the chance to climb the cathedral's bell tower for a stunning view that contrasts the old ruins with the modern city skyline. To get started, you can take a quick trolley ride from the entrance to the main plaza, which makes exploring the expansive grounds a breeze.