You'll want to browse the collections at Nagasaki Prefectural Art Museum, Gunkanjima Digital Museum and Twenty-Six Martyrs Museum and Monument. While you're exploring, swing by Megane Bridge, Nagasaki Dejima and Confucius Shrine to learn a bit about the area. Local parks like Glover Garden, Inasayama Park and Mount Inasa are peaceful spots to stop and take in some fresh air.