The Frans Hals Museum is the art museum of Haarlem. Here you will find the largest collection of paintings by Frans Hals in the world. Encounter 16th and 17th century, modern and contemporary art in two beautiful historic buildings in the old city center of Haarlem. Meet old, modern and contemporary art in Haarlem The Frans Hals Museum is the art museum of Haarlem. Here you will find the largest collection of paintings by Frans Hals in the world. Meet 16th and 17th century, modern and contemporary art in two beautiful historic buildings in the old city center of Haarlem. HAL – modern and contemporary art exhibitions On the Grote Markt, in the 17th-century Vleeshal, the Frans Hals Museum regularly organizes exhibitions of modern and contemporary art.