Friday, June 24. Aarhus, Denmark. This is Denmark's second-largest city and the largest port. The oldest vaulted building (a church) in Scandinavia is here, with an estimated date of 1060. We visited the Aarhus Cathedral, finished in 1520. It is the longest and highest church in Scandinavia. Aarhus also has an Old Town, with narrow cobblestone streets and buildings dating from 1600 to 1900.