What's on? In the Oslo region, it is always high season for cultural events. Below you will find a selection of upcoming concerts, festivals and sports events in the region. Allsang på GrensenPhoto: Halden Turist Festivals The Oslo region hosts numerous music festivals, food festivals and culture festivals. Find your favourite! Bislett Games_høydePhoto: Bislett Games Sports events Street cars, bike races, skiing and athletics. Enjoy sports events of all kinds in the Oslo region.