As his fortune grew, Stordalen started investing in art, mostly contemporary. His first buy was a painting by the American Artist Ross Bleckner which still hangs at his private estate. In an interview in September 2012, renown Swedish curator Sune Nordgren stated that Stordalen was the European answer to American hotelier Steve Wynn. This partly due to the fact that Stordalen had "redefined" hotel art by spending in excess of five million dollars in contemporary art on his two latest hotels alone, Clarion Hotel Post in Gothenburg and Clarion Hotel & Congress in Trondheim - and have a private collection which is valued at around 30 million dollars. In January 2013 Stordalen opens a new hotel called The Thief, in the Tjuvholmen neighborhood in Oslo. Every one of the 119 rooms will have unique original art from artists like Sir Peter Blake, Chris Gianakos and Tony Cragg. On the interactive TV's guests will, supposedly as the world´s first, be able to choose between pay-TV-options and contemporary video art. In one of the elevators there will be an animation by Julian Opie, one of Stordalen's favorite artists. In the library bar one will find a suite of pictures made by HM Queen Sonja of Norway. The Thief has signed a sponsorship-deal with the neighboring Astrup Fearnley Museum of Modern Art that gives the hotel access to the museums vast art library. Under the agreement, The Thief can borrow some signal work for strategic locations in the hotel. Stordalen has world leading collections of artists like Jaume Plensa, Alex Katz and Franz West. He also owns some of Andy Warhol's best interpretations of Norwegian Artist Edvard Munch. In the article the value of his total collections (private and Business combined) was said to be more valued to more than 50 million dollars. These are some of his known art possessions: Franz Wests «Lemure», Miwa Yanagis «Elevator Girls», Bård Breiviks «Partitur», Alex Katz’ «Kirsten in a baseball hat», Jaume Plensas «Tattoo», Julian Opies «Suzanne Walking» and Damien Hirsts «Stamp Out Pleasure And Pain».