The history of Oslo can be traced back over 1,000 years. Today, it is Norway's premier business centre with one of the highest regional GDPs in Europe.
The best time to visit Oslo is between May and October. Peak travel seasons tend to fall between June and August, with late summer being particularly rainy.
Some key dates to note if planning a trip to Oslo include May 17th which is Constitution Day. This a national holiday with processions and a children's festival. Oslo also hosts a number of festivals. In mid-June Oslo holds a four-day rock festival called "Norwegian Wood". In mid-August Oslo there is a 4-day rock festival called "Øya Festival".
If you plan to take part in winter sports like skiing, be sure to remember to bring your own equipment as rentals can be quite expensive. Also, note that alcohol is prohibited in public areas, and that spirits are only sold in designated shops. Smoking is not allowed in restaurants and bars. The cost of living in Oslo is mostly higher than in the UK and London, while basic meals out are slightly cheaper than in London. Alcohol prices, however, are much higher.
As with most major cities there are a variety of means with which to get from the airport to the city centre. The fastest method is the Airport Express train, called "Flytoget", which takes 20 minutes and costs around 180 NOK. The cheapest way to get from the airport is the regional NSB train which takes about 23 minutes and costs around 90 NOK.
There are a number of places from which to choose to rest your weary head in Oslo. Backpacker hostels range around 200 NOK for a bed in a shared room, while a 3-star hotel will cost around 1,600 NOK per night per person. Public transit is quite reliable as well, Single tickets for suburban trains cost around 30 NOK, with travel cards costing around 90 NOK/day and 240 NOK/week.