It’s easy to find very cheap flight to Norway but Norway is very expensive. So what is solution? Go to 24h trip, take food with you and not sleep. That’s what I did with friends 4 years ago.
city
I came to Spain to make skydive over Castellón de la Plana but in the meantime I visited Barcelona. I came to this city at 9 pm. Next day at 9 am I had a train to Castellón and I decided not to sleep and see how Barcelona looks at night. It turned out, it looks a little different that I had imagined.