Two horses in a meadow, sculpture by Philip Hart, and a graduation tower, Grugapark, Essen, Ruhr area, North Rhine-Westphalia, Germany, Europe

Cacti vegetation with Golden Barrel Cactus or Mother-in-Law's Cushion (Echonocactus grusonii), plant display house, Grugapark, Essen, North Rhine-Westphalia, Germany, Europe

Two seniors sitting in front of a graduation works for the inhalation of salty air, Sole, Grugapark, Essen, Ruhr area, North Rhine-Westphalia, Germany, Europe

"Logo, IdeenPark 2012, a technology and education summit conference for young people, Essen, Ruhr area, North Rhine-Westphalia, Germany, Europe"

"Gurzenich venue, Cologne, Rhineland, North Rhine-Westphalia, Germany, Europe"

Gruga Hall, concert and event hall, Essen, North Rhine-Westphalia, Germany, Europe

"Aerial view, Essen town hall and city council building, at night, Stadtbezirke I, Essen, North Rhine-Westphalia, Germany, Europe"

World Conference Center, former plenary hall, Bonn, Rhineland, North Rhine-Westphalia, Germany, Europe

"Park Sounds"""", an event with electronic music and picnicking in the Stadtgarten Essen park, Essen, North Rhine-Westphalia, Germany, Europe"

"Park Sounds"""", an event with electronic music and picnicking in the Stadtgarten Essen park, Essen, North Rhine-Westphalia, Germany, Europe"

"Park Sounds"""", an event with electronic music and picnicking in the Stadtgarten Essen park, Essen, North Rhine-Westphalia, Germany, Europe"

"Jahrhunderthalle or Centennial Hall with a water tower at dusk, Bochum, North Rhine-Westphalia, Germany, Europe"

"Aerial view, aluminium smelting plant, Econova industrial estate, Bergeborbeck, Essen, Ruhr area, North Rhine-Westphalia, Germany, Europe"

"Mercatorhalle, events venue, Duisburg, Ruhr Area, North Rhine-Westphalia, Germany, Europe"

"RWE Tower, EVONIK corporate headquarters, Aalto Theater and Saalbau Essen, downtown, Essen, North Rhine-Westphalia, Germany, Europe"

"Aerial view, aluminium smelting plant, Econova industrial estate, Bergeborbeck, Essen, Ruhr area, North Rhine-Westphalia, Germany, Europe"

Grugahalle event hall, Grugapark, Essen, North Rhine-Westphalia, Germany, Europe