The Tidal Basin with Cherry Blossoms is closed off by the city due to COVID-19 concerns in Washington D.C., the United States, on March 23, 2020. (Photo by Ting Shen/Xinhua)

The Tidal Basin with Cherry Blossoms is closed off by the city due to COVID-19 concerns in Washington D.C., the United States, on March 23, 2020. (Photo by Ting Shen/Xinhua)

The Tidal Basin with Cherry Blossoms is closed off by the city due to COVID-19 concerns in Washington D.C., the United States, on March 23, 2020. (Photo by Ting Shen/Xinhua)

The Tidal Basin with Cherry Blossoms is closed off by the city due to COVID-19 concerns in Washington D.C., the United States, on March 23, 2020. (Photo by Ting Shen/Xinhua)