Yellow rendering on stonework conservation project, Orford Castle, Suffolk, England, United Kingdom, Europe

Sunflowers and the humid tropics biome, The Eden Project, near St. Austell, Cornwall, England, United Kingdom, Europe

A tulip display at the Eden Project, Cornwall, England, United Kingdom, Europe

Cabs, AV Arriaga, Funchal, Madeira, Portugal

Yellow house facade with aluminium sheets, art project for the element light, courtyard of the elements, Kunsthofpassage, artists Annette Paul, Christoph Rossner and Andre Tempel, Antonstadt, Dresden, Saxony, Germany, Europe

Glowing balloon on the grounds of the Zeche Zollverein mine, part of the Schachtzeichen art project of the Kulturhaupstadt-Jahr Ruhr2010 Capital of Culture-year, 311 yellow balloons mark former mine shafts, Oberhausen, Ruhrgebiet area, North Rhine-Westpha

Project for Yellow, Red, Blue, Vassily Kandinsky, Musee National d'Art Moderne, Centre Georges Pompidou, Beaubourg, Paris, Ile-de-France, France, Europe

Floral & geometric patterns of restored Timurid tile mosaics decorate a wall in the courtyard of the Friday Mosque or "Masjid-i Jami", the largest mosque in Herat, dating to 1200 AD, Herat, Afghanistan. Much of the Ghorid and Timurid decorations on the mosque had been badly damaged during the centuries, but a restoration project begun in 1943 continues today.