David Woodfall / Mixture of flowers, including Marigolds (Calendula officinalis) sown to attract wild bee species grown on roundabout / underpass of Motorway, M32, in inner city Bristol, Avon, UK, September.

Gavin Hellier / Timelapse looking out of the front of a train on the elevated Dubai Metro System, Dubai, United Arab Emirates, 2011.

Gavin Hellier / Opened in 2010, the Dubai Metro, MRT, in motion along Sheikh Zayed Road at dusk, Dubai, United Arab Emirates. No release available.

Gavin Hellier / Moving train pulling into the station with people waiting, modern subway station, Berlin, Germany, 2009. No release available.

Gavin Hellier / Underground railway entrance sign, London, England UK, Europe

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 on a metro platform, Moscow, Russia, May 2016. Hellier

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

Pat Tuson / Urban Rickshaw with driver or rider outside Covent Garden Underground Station, an sustainable form of transport, Central London, England, UK, June 2013.