A visitor views an artwork by British artist Rachel Whiteread at the National Gallery of Art in Washington D.C., the United States, on Oct. 19, 2018. The exhibition of Rachel Whiteread, a British artist who primarily makes sculptures and a winner of the Turner Prize, brought together some 100 objects from the course of the artist's 30 year career, including drawings, photographs, architecture-scaled sculptures, archival materials and documentary materials on public projects. (Xinhua/Liu Jie)