"Rautenstrauch-Joest-Museum, at the blue hour, Cologne, North Rhine-Westphalia, Germany, Europe"

World clock and television tower, Alexanderplatz, Berlin-Mitte, Berlin, Germany, Europe

Cologne Cathedral at blue hour, Philharmonie, Hohenzollern Bridge, Rhine, Cologne, North Rhine-Westphalia, Germany, Europe

Football stadium illuminated with perimeter advertising, blue hour, DFB Cup Final 2018, Olympic Stadium Berlin, Germany, Europe

"Ferris wheel at the blue hour, Schuetzenfest festival, Biberach an der Riss, Upper Swabia, Baden-Wuerttemberg, Germany, Europe"

"Cologne panorama, Great St. Martin Church, Cologne Cathedral and Hohenzollern Bridge, blue hour, dusk, Cologne, North Rhine-Westphalia, Germany, Europe"

Skyline, Business District, Main, Blue Hour, Frankfurt am Main, Hesse, Germany, Europe

Skyline, Business District, Main, Blue Hour, Frankfurt am Main, Hesse, Germany, Europe

Skyline, Business District, Main, Blue Hour, Frankfurt am Main, Hesse, Germany, Europe

Lightning strike in northern Berlin, Berlin, Germany, Europe

Potsdamer Platz in Berlin from above, Berlin, Germany, Europe

Bauhaus Archive, Design Museum, architect Walter Gropius, Berlin, Germany, Europe

Illuminated world time clock at the blue hour, Berlin, Germany, Europe