I Spy is often refered to as a spotter´s game for children. Your probably young at heart so why not try some spotting in London?
Here´s a challenge for you...
To the untrained eye, they are green sheds - an incongruous sight on the busy streets of urban London.
But these wooden structures have, in fact, been part of the street-scene in the capital since 1875 - a refuge for taxi drivers to eat, drink and take shelter from the weather.
These days, just 13 remain - and many now serve the general public at large. But cabbies remain their core customer base.
Below: Outside Warwick Avenue Tube Station, W9
Below: Russell Square, WC1
Below: Chelsea Embankment, SW3
near junction with Albert Bridge.
Below: Hanover Square, W1. North side of central gardens.
Below: Pont Street, SW1. Close to the junction of Sloane Street.
Below: St. George´s Square, Pimlico,SW1.
Below: Wellington Place,NW8, near to Lord´s Cricket Ground.
Below: Grosvenor Gardens, SW1. West side of the north gardens.
Below: Outside Kensington Park Road 8-10, W11.
Below: Embankment Place,WC2. Close to the Playhouse Theatre.
Below: Thurloe Place, Kensington SW7. Opposite the Victoria and Albert Museum.
Below: Temple Place,WC2
Below: Kensington Road,W8, close to the junction of Queen´s Gate.