Hugo Ferreira - CC BY-SA 4.0 Marco Varisco from Albany, New York, USA - CC BY-SA 2.0 Mathieu Marquer from Paris, FRANCE - CC BY-SA 2.0 Marian78ro - CC BY-SA 4.0 David Galán - CC BY-SA 4.0 MarioM - Public domain Peter K Burian - CC BY 4.0 Manuel Silveira - CC BY-SA 4.0 Paulo Juntas - CC BY-SA 3.0 Sandra Vallaure from Seville, Spain - CC BY 2.0 Luca Nebuloni from Milan, Italy - CC BY 2.0 Elemaki - CC BY 3.0 Łukasz Dzierżanowski - CC BY 2.0 Andreas Trepte - CC BY-SA 2.5 Duca696 - CC BY-SA 3.0 larahcv - CC0 Silas Szwarcberg Cunha - CC BY-SA 4.0 Peter K Burian - CC BY 4.0 Manuel Silveira - CC BY-SA 4.0 Mister No - CC BY 3.0 Paolo Querci - CC BY-SA 3.0 No machine-readable author provided. Juntas assumed (based on copyright claims). - Public domain Gabriel González from Pontevedra, España - CC BY-SA 2.0 Monitotxi from Barcelona, Spain - CC BY-SA 2.0 Botafogo - Public domain José Antonio Gil Martínez - CC BY 2.0 Dicklyon - CC BY-SA 4.0 Rosino - CC BY-SA 2.0 Fernando Jose Cantele - CC BY-SA 4.0 Marco Varisco from Albany, New York, USA - CC BY-SA 2.0 Steven Fruitsmaak - CC BY-SA 3.0 Elisa.rolle - CC BY-SA 4.0 Dronepicr - CC BY 3.0 Olga1969 - CC BY 4.0 Elfodelbosque - CC BY-SA 4.0 prilfish from Vienna, Austria - CC BY 2.0 Xosema - CC BY-SA 3.0 Dicklyon - CC BY-SA 4.0 Javier Habladorcito from Gijón, Spain - CC BY 2.0 Xosema - CC BY-SA 3.0 Vitor Oliveira from Torres Vedras, PORTUGAL - CC BY 2.0 Bengt Nyman - CC BY 2.0 Rafael Marques from Espinho - Aveiro, Portugal - CC BY 2.0 Brais Martelo Lopez - CC BY-SA 4.0 joselomba - CC BY-SA 3.0 Adrián Estévez (Estevoaei) - CC BY-SA 3.0 Edna Winti - CC BY 2.0 Rockysantos - CC BY-SA 4.0 Christian Gänshirt - CC BY-SA 4.0 Javier Albertos - CC BY-SA 4.0 No images