An architectural installation by NRJA is displayed during the White Night in Riga, Latvia, Sept. 5, 2020. White Night, a modern urban culture forum aiming at changing the public perception of environment and cultural life, was held here. (Photo by Edijs Palens/Xinhua)

An art installation by Luke Jerram is displayed during the White Night in Riga, Latvia, Sept. 5, 2020. White Night, a modern urban culture forum aiming at changing the public perception of environment and cultural life, was held here. (Photo by Edijs Palens/Xinhua)

An art installation by Luke Jerram is displayed during the White Night in Riga, Latvia, Sept. 5, 2020. White Night, a modern urban culture forum aiming at changing the public perception of environment and cultural life, was held here. (Photo by Edijs Palens/Xinhua)

An art installation by Luke Jerram is displayed during the White Night in Riga, Latvia, Sept. 5, 2020. White Night, a modern urban culture forum aiming at changing the public perception of environment and cultural life, was held here. (Photo by Edijs Palens/Xinhua)

An art installation by Luke Jerram is displayed during the White Night in Riga, Latvia, Sept. 5, 2020. White Night, a modern urban culture forum aiming at changing the public perception of environment and cultural life, was held here. (Photo by Edijs Palens/Xinhua)