When exploring Norway, the top five cities to visit are Oslo, Bergen, Stavanger, Trondheim, and Tromsø. Oslo, the vibrant capital, offers a rich cultural scene and stunning architecture. Bergen, known for its picturesque harbour and surrounding mountains, is a gateway to the fjords. Stavanger boasts beautiful beaches and historic sites. Trondheim, with its medieval charm, is ideal for history lovers. Lastly, Tromsø, located within the Arctic Circle, provides a unique opportunity to witness the Northern Lights.