(Bilder: Art Allianz - Fotolia.com; dpa; Neustockimages/ www.istockphoto.com; Dmitriy Shironosov/ www.istockphoto.com; Udo Ingber/ www.fotolia.com; Claudia Dewald/ www.istockphoto.com; BerlinOnline/mh; Wolfgang Scholvien; METRO Group Asset Management Services GmbH ; ECE; Birgit Lieske / www.pixelio.de; BerlinOnline/argus/flashpics/fotolia.com)