Portrait of Adele Bloch-Bauer I is a 1907 painting by Gustav Klimt. According to press reports it was sold for US$135 million to Ronald Lauderfor his Neue Galerie in New York City in June 2006, which made it at that time the most expensive painting for about 4 months. It has been on display at the gallery since July 2006.
Klimt took three years to complete the painting. It measures 138 x 138 cm and is made of oil and gold on canvas, showing elaborate and complex ornamentation as seen in the Jugendstil style. Klimt was a member of the Vienna Secession, a group of artists that broke away from the traditional way of painting. The picture was painted in Vienna and commissioned by Ferdinand Bloch-Bauer. As a wealthy industrialist who had made his fortune in the sugar industry, he sponsored the arts and favored and supported Gustav Klimt. Adele Bloch-Bauer became the only model who was painted twice by Klimt when he completed a second picture of her, Adele Bloch-Bauer II, in 1912.