A Glastonbury-esque music festival taking place over four days at the end of June, Roskilde is one of the most popular events in Copenhagen. Travelers should be aware that the city will be more congested at this time, as young music lovers from all over Europe converge to celebrate the best of that year's electronica, dance, and pop offerings. Many will camp and party for days in the fields on the outskirts of the city. Full festival tickets, which include camping fees, are 1,910 DKK.

roskilde-festival.dk