Contemporary multi story office building in business and logistics area of Navrangpura, Ahmedabad, Gujarat, India, Asia

Underground mine of the family Bevan in Lightning Ridge, near the Queensland border, opal settlement, New South Wales, Australia

Opal stone close-up, Lightning Ridge, opal settlement, New South Wales, Australia

Visitor searching for opals, opal mining fields, Aboriginal Land, Stuart Highway near Marla Opalsiedlung, South Australia

Two older men searching for opals, opal mining fields, Aboriginal Land, Stuart Highway near Marla Opalsiedlung, South Australia

Department of Food, Agriculture and Forestry Ingolstadt - branch office Eichstaett, Residenzplatz square, Eichstaett, Altmuehltal, Upper Bavaria, Bavaria, Germany, Europe

Branch office from Mercedes Benz in Berlin in the evening during dawn, Berlin, Germany

Wernerwerk multistory building in the evening, entrance, sign, Siemens AG, Berlin, Germany.

New headquarters of EON Ruhrgas AG, almost 2, 000 employees started working in the new administrative building in October 2010, Essen, North Rhine-Westphalia, Germany, Europe

HSH Nordbank, financial crisis 2009, branch in Hamburg, Germany, Europe

Merck Finck & Co., private bankers, financial district office in Cologne, North Rhine-Westphalia, Germany, Europe

Branch of the Turkish Vakifbank in Cologne, North Rhine-Westphalia, Germany, Europe

Former head office Hannoversche Bank, today branch office Deutsche Bank, city centre, Hanover, Lower Saxony, Germany, Europe

Siemens Branch-office, evening, Berlin, Germany

Wernerwerk multistrory building in the evening, entrance, sign, Siemens AG, Berlin, Germany.

Deutsche Bank building, Kirchberg district, city of Luxembourg, Europe

Aerial view, roof with solar panels, German branch office of Pilkington, Rotthausen district, Gelsenkirchen, Ruhr area, North Rhine-Westphalia, Germany, Europe

Sparkassen-Arena concert hall, formerly Ostseehalle, state capital of Kiel, Schleswig-Holstein, Germany, Europe

Reflective glass facade of the IBM branch office in Hamburg, Berliner Tor Centrum BTC, Hamburg, Germany, Europe

Deutsche Post AG: branch office for letters. GERMANY, SAXONY, LEIPZIG.

Partial view, Mercedes-Benz branch office, Stuttgart, Baden-Wuerttemberg, Germany, Europe

Aerial view, roof with solar panels, German branch office of Pilkington, Rotthausen district, Gelsenkirchen, Ruhr area, North Rhine-Westphalia, Germany, Europe

Snow covered tree branches, office building in background