Kunsthalle Emden (Henri and Eske Nannen Foundation and Otto van de Loo Donation) is a museum of modern and contemporary art in the seaport city of Emden (East Frisia). It was donated by Henri Nannen in 1986. A donation from the Munich gallery owner and collector Otto van de Loo expanded the art collection, which also necessitated extensions to the building. The building ensemble in the typical local clinker brick was designed by the architect couple Friedrich and Ingeborg Spengelin from Hanover. The Kunsthalle is a member of the Arbeitskreis selbständiger Kultur-Institute (Working Group of Independent Cultural Institutes), an association of currently 37 nationally and internationally renowned, independent cultural and research institutes, which represent the quality and diversity of cultural Germany to a special degree through a valuable collection. The Kunsthalle has about 1500 paintings. Henri Nannen himself contributed 650 works of art at the time of the foundation. 368 additional paintings alone have been added since 2001 through purchases and donations