One of my favorite places to explore street art is at Grunerløkka and along the beautiful Akerselva river. Akerselva river offers more than 8km walking paths, adorned with lovely coffee shops, markets, vintage shops, bars and concert venues. Akerselva is a narrow river that basically divides the city in two, east and west. It starts at Maridalsvannet, which is located in Oslomarka and traverses different neighborhoods, to finally end in Bjørvika. It is a highly recommended walk along the river to experience a bit of everything, including some impressive waterfalls. Street art is scattered a bit everywhere, yet you will likely find a concentration around the Hausmania culture house and the nearby popular Jazz Club called Blå. On many of these walls, you can find works of both national and international artists. painting in big and small scale. Some of the murals will almost certainly put you in a good mood.
If you are walking on a Sunday, make sure you visit the Sunday Market at Blå. They sell amazing products.
If you really want to acquaint yourself with this area, then simply get lost and absorb.
How to get to Grunerløkka:
On foot: you can start walking from the multicultural area of Grønland along the Akerselva river.
By Tram: if you are in the city center, take tram 11,12 or 18 with direction Biermanns gate.