A musician wearing a face mask plays the fiddle at Park Guell in Barcelona, Spain on Sept. 25, 2020. (Photo by Joan Gosa/Xinhua)

A family visits the Park Guell in Barcelona, Spain on Sept. 25, 2020. (Photo by Joan Gosa/Xinhua)

Tourists visit the Park Guell in Barcelona, Spain on Sept. 25, 2020. (Photo by Joan Gosa/Xinhua)

A couple wearing face masks rest on a bench in Park Guell in Barcelona, Spain, Sept. 25, 2020. (Photo by Joan Gosa/Xinhua)