Aerial view on London. Photo by: Sellar Group

London used to be the largest and most influential city in the world. With a population of 12 million, it is still the world’s largest financial center and Europe’s largest city. Photo by: Howard Kingsnorth

Olympics opening ceremony. In 2012 London became the first city to host the modern Olympic Games three times, having previously done so in 1908 and in 1948. Photo by: Paul Sancya

Taking photographs of the Tower bridge is a favorite London tourist activity, but you can also go inside the bridge, where you’ll have a magnificent view over London from the walkway between the two bridge towers. Photo by: Mark Spokes

Full moon over London. Photo by: Dan Kitwood

On average the London Eye receives more visitors per year than the Taj Mahal and the Great Pyramids of Giza. Photo by: David Iliff

The London Eye can carry 800 people each rotation, which is comparable to 11 London red double decker buses. Photo by: Tom Denning

The London Underground network then and now. It is the oldest urban subway system in the world. Photo by: Ben Phaze

Workmen clean the clock face of St Stephens Tower which houses Big Ben in London. Photo by: Lewis Whyld

Winter in London. The red phone box is called also K6 (Kiosk number 6) and it was designed by Sir Giles Gilbert Scott in 1935. Photo by: unknown

The Royal Opera House started out in 1732 as the Covent Garden Theater, but a disastrous fire gutted it in 1808. Photo by: David Leventi

Tilt-shift photography of London’s traffic and famous double decker buses. Photo by: Keith Loutit