People queue to visit the Eiffel Tower on its reopening day in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)

A mascot welcomes visitors on the reopening day of the Eiffel Tower in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)

The Eiffel Tower is seen on its reopening day in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)

The Eiffel Tower is seen on its reopening day in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)

The first batch of visitors arrive at the Eiffel Tower on its reopening day in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)

A screen reading "Face masks are mandatory" is seen in front of the Eiffel Tower on its reopening day in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)

The first batch of visitors are welcomed by staff members on the reopening day of the Eiffel Tower in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)

People wearing face masks wait to visit the Eiffel Tower on its reopening day in Paris, France, June 25, 2020. The Eiffel Tower reopened to the public on Thursday following an over-three-month closure due to the COVID-19 pandemic. (Xinhua/Gao Jing)