One of the UK's most famous theatres, the cliffside, open-air Minack Theatre, at Porthcurno, near Penzance, in west Cornwall, England, United Kingdom, Europe

People cheering in front of the big stage at Southside, open-air festival, Neuhausen ob Eck, Bavaria, Germany, Europa

Stage for the opera Aida, Seebuehne Bregenz floating stage, Bregenzer Festspiele Festival, Lake Constance, Vorarlberg, Austria, Europe

Concert of the pop band Pur on the Loreley open air stage, St. Goarshausen, Rhineland-Palatinate, Germany, Europe

Seefest lake festival at Lake Baldeney, with a floating stage, a three-day open air concert on the lake shore, Essen, North Rhine-Westphalia, Germany, Europe

Swiss rapper Marco Bliggensdorfer aka Bligg playing live at the Heitere Open Air music festival in Zofingen, Switzerland, Europe

Loreley open-air stage, St. Goarshausen, Rhineland-Palatinate, Germany, Europe

Open air opera Aida in the Roman amphitheatre in Verona Veneto Italy

Concert of the pop band Pur on the Loreley open air stage, St. Goarshausen, Rhineland-Palatinate, Germany, Europe

Stoertebeker Festival, Ralswiek Stage, Ruegen Island, Baltic Sea, Mecklenburg-Western Pomerania, Germany, Europe

Stage for the opera Aida, Seebuehne Bregenz floating stage, Bregenzer Festspiele Festival, Lake Constance, Vorarlberg, Austria, Europe

Audience at the Open Air Festival, Muehldorf am Inn, Bavaria, Germany

Public with sparklers, Klassik Open Air, Nuremburg Symphony Orchestra, illuminated stage, Luidpoldhain, Nuremberg, Middle Franconia, Bavaria, Germany, Europe

Concert of the pop band Pur on the Loreley open air stage, St. Goarshausen, Rhineland-Palatinate, Germany, Europe

Open air stage, Sentido Apollo Blue Hotel in Faliraki, Rhodes, Greece, Europe

Open air stage, Sentido Apollo Blue Hotel in Faliraki, Rhodes, Greece, Europe

Scottish singer-songwriter Amy Macdonald performing live at the Heitere Open Air in Zofingen, Switzerland, Europe

Open-air stage at the Red Gate and Basilica St. Ulrich and Afra, downtown, Augsburg, drone shot, Swabia, Bavaria, Germany, Europe

German pop band Luxuslaerm performing live at the Heitere Open Air festival in Zofingen, Switzerland, Europe