Laurent Geslin / House cricket (Acheta domesticus) in a metro station in Paris, France

Gavin Hellier / Commuters using escalators in Moscow's Komsomolskaya metro station, showing vaulted ceiling and chandeliers, Russia, May 2016. Hellier

Gavin Hellier / Timelapse of people on a train platform at Moscow's Komsomolskaya metro station, showing chandeliers, Russia, May 2016. Hellier

Gavin Hellier / Timelapse of commuters using escalators in Moscow's Komsomolskaya metro station, showing vaulted ceiling and chandeliers, Russia, May 2016. Hellier

Gavin Hellier / Timelapse of commuters in Moscow's Komsomolskaya metro station, showing vaulted ceiling and chandeliers, Russia, May 2016. Hellier

Gavin Hellier / Timelapse of commuters entering and exiting trains at Shibuya Station at rush hour, Shibuya, Tokyo, Honshu, Japan, 2011.

Gavin Hellier / Opened in 2010, the Dubai Metro, MRT, in motion approaching a station, Dubai, United Arab Emirates 2011