Roskilde, located just west of Copenhagen, Denmark, is a historic site dating to the viking age.
The Roskilde cathederal is one of the most popular tourist sites in the city - it is also listed as a UNESCO world heritage site. The cathederal is also the burial ground for danish monarchs and attracts over 125,000 visitors annually.
The most popular site in Roskilde is probably its fantastic viking ship museum. This museum hosts the well preserved and restored remains of five viking ships that were scuttled in the Roskilde fjord as a means of defending the city - which used to be the capital - against an invading army. This collection includes a ship 30m in length - the largest ever recovered.
The museum has recently made news as they have completed the restoration of one of the scuttled ships and will attempt to sail her back to her home port of Dublin, Ireland powered only by her sails.