Tehran (ISNA) – Wearing a face mask is still the best way to contain the spread of the COVID-19 since the beginning of the infectious disease. 
Recreation centers of Tehran hosted many citizens and travelers from other parts of the country during this year's Nowruz holidays.
While many people avoid close contact with others and follow health protocols, a limited number of people still do not wear face masks.
Some people leave their face masks on the ground and in green spaces after using them.
These pictures show green spaces, parks, and forest parks of Tehran during the Nowruz holidays. Places where used face masks can be found easily.

Photographer: Mohammad Ali Asadi