The London Eye, or Millennium Wheel, is the largest Ferris wheel in Europe. It's supported only on one side by an A-Frame, reminiscent of a Masonic compass. It has 32 Eye Capsules which can hold about 24 people each.
The London Eye is lit up red to represent red poppies in celebration of Poppy Day (also known as: Remembrance Day, Veterans Day, and Armistice Day). Poppy Day is celebrated on November 11. In the included picture, a building behind the Eye is also decorated with red poppies. The red poppy flower is used in the movie The Wizard of Oz to represent the sedative effects of the Wicked Witch's spell. The reason for this is that another variety of poppy plant is the source for opium which typically has red flowers. It's highly ironic that a plant similar to one with a sedative, sleepy effect, is used on a day called "Remembrance Day."
The Eye itself evokes pictures of the sun, historically drawn with a circle with a dot in the middle, as well as pictures of other "eyes," including the Eye of Sauron from the Lord of the Rings trilogy.
Movie Synchronicity 9: London Eye, giant Stargate, by Jake Kotze.