21st century Anschutz Entertainment Group Development architecture arena arrangement art atmosphere Berlin Berlin Friedrichshain blue building cathedral coliseum color complex concert concerts conference culture display document dome dawn dusk Eastside Gallery echo elucidation Europe European event events exterior view external facade facility flood flow Friedrichshain Friedrichshain Kreuzberg futurist futuristic German Germany glass hall heaven illuminated illumination ice hockey installation Helmut W Joos architect HOK Sports JSK Architects leisure lettering light lighted lighting lit littoral logo logotype mark Mauerreste meeting mirage mirroring multifunction multifunctional multi purpose neon night O₂ O2 O 2 O₂ Arena O2 Arena O₂ World O2 World outdoor shot red ring script shield shore sign sign posting signboard signposting signpost signposts show skill sky sport sports stadium time tint type of building twilight world JH1208031NX 21 Jahrhundert Anschutz Entertainment Group Development Architektur Arena Arenen Athmosphaere Aussen Aussenansicht Aussenaufnahme beleuchtet Beleuchtung Beschilderung Blau Daemmerung Deutschland Eastside Gallery Emblem Eishockey Faarbe Firmenlogo Friedrichshain Friedrichshain Kreuzberg Futuristisch Gebaeudetyp Himmel HOK Sports JSK Architekten Helmut W Joos Archjtekt Konzert Konzerte Konzerthalle Kulturgebaeude Kunst Leuchtschild Mauer Mauerreste Mehrzweckhalle Multifunktionsarena Multifunktionshalle Nacht O₂ O2 O 2 O₂ Arena O2 Arena O₂ World O2 World Oeffentlich Reklame Spree Ufer Veranstaltung Veranstaltungen Veranstaltungshalle Werbung Wolke Wolken World JH1208031NX