In 2010, the city council voted to change the name from "Århus" to "Aarhus" in order to strengthen the international profile of the city. Certain geographically affiliated names have been updated to reflect the name of the city, such as the Aarhus River, changed from "Århus Å" to "Aarhus Å".It is still grammatically correct to write geographical names with the letter Å and local councils are allowed to use the Aa spelling as an alternative.In the 1950s many jazz clubs sprang up around the city, fuelled by the young population.
Many public and religious buildings were built in and around the city; notably Aarhus Cathedral was initiated in the late 12th century by the influential bishop Peder Vognsen.
In 1441, Christopher III issued the oldest known charter granting market town status although similar privileges may have existed as far back as the 12th century.
Parts of the ramparts are still in existence today and can be experienced as steep slopes at the riverside and they have also survived in some place names of the inner city, including the streets of Volden (The Rampart) and Graven (The Moat).
Aarhus grew to become one of the largest cities in the country by the early 16th century.
The inner urban area contains 269,022 inhabitants (as of 1 January 2017 The history of Aarhus began as a fortified Viking settlement founded in the 8th century and with the first written records stemming from the bishopric seated here from at least 948.
The city was founded on the northern shores of a fjord at a natural harbour and the primary driver of growth was for centuries seaborne trade in agricultural products.Whichever spelling local authorities choose, most newspapers and public institutions will accept it.Some official authorities such as the Danish Language Committee, publisher of the Danish Orthographic Dictionary, still retain "Århus" as the main name, providing "Aarhus" as a new, second option, in brackets.It is a centre for research and education in the Nordic countries and home to Aarhus University, Scandinavia's largest university, including Aarhus University Hospital and INCUBA Science Park.Being the Danish city with the youngest demographics, with 48,482 inhabitants aged under 18, Aarhus is notable for its musical history.The city ranks as the 92nd largest city in the European Union, and as number 234 among world cities. Aarhus is the principal industrial port of the country in terms of container handling and an important trade hub in Kattegat.