Big Ben is the nickname for the great bell of the clock at the north end of the Palace of Westminster in London, and is often extended to refer to the clock or the clock tower as well. Big Ben is the largest four-faced chiming clock and the third-tallest free-standing clock tower in the world.It celebrated its 150th anniversary in May 2009
The Eiffel Tower is a very famous tower in the world. It is located in paris (France). It is the biggest tower in Paris.
London Bridge is a bridge between the City of London and Southwark in London, England, over the River Thames.
The Empire State Building is a 102-story landmark Art Deco skyscraper in New York City at the intersection of Fifth Avenue and West 34th Street.