Newly built city palace, Humboldforum on the river Spree in winter in Berlin, Germany, Europe

berlin buildings building central europe city palaces city palace conference center congress halls congress hall convention centers convention center convention centre copy space cultural centers cultural center cultural centre cultural sites cultural site deserted drearyness empty europe event centers event center event centre event halls event hall exhibit hall exhibition hall exhibitions exhibition expo fair hall fair famous place german federal republic germany gray grey halls hall heritage buildings heritage building in winter middle europe monochromatic monochrome monotonous new nobody no one no people palaces palace place of interest rivers river sights sight spree river spree tourist attractions tourist attraction trade fair hall trade show travel photography travel uninhabited urban palace venues venue water wintery winter wintry