These two city entries:
http://skyscraperpage.com/cities/?cityID=2786
http://skyscraperpage.com/cities/?cityID=581
...refers to the same city: Aarhus, second largest of Denmark.
The correct spelling in both Danish and English is Aarhus with two a's.
As of 2012 the municipality have a population of 314 545. (
Wikipedia)
Other municipalities in the
East Jutland Metropolitan Area, and listed in SSP, are:
Vejle
Randers
Kolding
Hedensted
Middelfart