Photo taken on Sept. 21, 2016 shows the inside of the Markthal indoor food market in Rotterdam, the Netherlands. The covered market is located in the city center of Rotterdam, the roof of which is shaped by an arch of 228 apartments. This combination of market and housing is the first of its kind, making it a world premiere. The inside of the archway bears the biggest artwork in the Netherland: The Horn of Plenty. (Xinhua/Gong Bing)