A Greek bicycle police team pose for a photo near the Acropolis, in Athens, Greece, on July 6, 2018. Created in 2015, bicycle police belong to the Department of Tourist Police and seek to provide information to tourists as well as to manage mild public order issues. (Xinhua/Marios Lolos)

A Greek bicycle policeman provides information to a tourist near the Acropolis, in Athens, Greece, on July 6, 2018. Created in 2015, bicycle police belong to the Department of Tourist Police and seek to provide information to tourists as well as to manage mild public order issues. (Xinhua/Marios Lolos)

Greek bicycle policemen patrol near the Acropolis, in Athens, Greece, on July 6, 2018. Created in 2015, bicycle police belong to the Department of Tourist Police and seek to provide information to tourists as well as to manage mild public order issues. (Xinhua/Marios Lolos)

Greek bicycle policemen patrol near the Acropolis, in Athens, Greece, on July 6, 2018. Created in 2015, bicycle police belong to the Department of Tourist Police and seek to provide information to tourists as well as to manage mild public order issues. (Xinhua/Marios Lolos)

A Greek bicycle policeman provides information to tourists near the Acropolis, in Athens, Greece, on July 6, 2018. Created in 2015, bicycle police belong to the Department of Tourist Police and seek to provide information to tourists as well as to manage mild public order issues. (Xinhua/Marios Lolos)

A Greek bicycle police team patrol near the Acropolis, in Athens, Greece, on July 6, 2018. Created in 2015, bicycle police belong to the Department of Tourist Police and seek to provide information to tourists as well as to manage mild public order issues. (Xinhua/Marios Lolos)