On 7 April 2004, ARoS opened with exhibitions in a brand new modern building, 10 stories tall with a total floor area of 20,700 m² and designed by Danish architects Schmidt Hammer Lassen.

Apart from the large galleries with both permanent and changing exhibitions, the ARoS building features an arts shop, a dining café and a restaurant.

ARoS has a large art collection with works from the Danish Golden Age until today, a changing selection of which are on display in the museum halls.

Alongside, themed and changing exhibitions of both Danish and international artists are presented, with former events featuring renowned artists such as Ólafur Elíasson, Bjørn Nørgaard, Ingvar Cronhammar, architect Frank Gehry, Paul McCarthy, Robert Rauschenberg, Michael Kvium, Bill Viola, Franciska Clausen, Cindy Sherman and Sarah Sze.

Located in the basement is The 9 Spaces, a gallery with installation art from artists like James Turrell, Shirin Neshat, Bill Viola and Anri Sala.

A second section, a glass lounge that guides visitors from the main museum building to Your rainbow panorama and houses another site-specific work opened in 2013.