Akershus Slott & Festning – Originaly built in 1300, this medieval castle and fortress built on difficult terrain is a must-see. Witness the changing of the guard here every afternoon.
Fredriksten Festning – Be sure to explore the ramparts and mysterious passages of this imposing fortress that has withstood six Swedish sieges. Within the fortress walls, you’ll also find a number of museums as well as an old brewery and bakery.
Munchmuseet - This museum houses the largest collection of works by Edvard Munch – Norway’s most famous artist who bequeathed his sizable collection the city when he died in 1944.