Oslo, Norway
buy a ticket for the public transport system, it's universal and can be used on all buses, trams, subways and ferries. If you don't have a ticket, and are caught in a ticket inspection it'll set you back around 150 dollars
speaking of ferries, do catch a ferry in the summer to one of the islands.
we know that it's expensive here
don't eat at Karl Johan street, the food is way more expensive than it deserves to be
instead, check out some of the cafes, restaurants and bars in and around Torggata and Grünerløkka if you're only here for a few days and are located in the city center
the neighborhoods Kampen, Lille Tøyen and the area north of Sofienbergparken are nice to have a relaxing walk in, with wooden houses and small streets, away from the traffic
While Frognerseteren restaurant is expensive, you should take a trip if only for the views. Metro line 1 will take you there in 30 minutes from the center of oslo
Alcohol is very expensive, so keep that in mind if you want to party