Elizabeth Tower, commonly called Big Ben, It the most iconic landmarks of London, and Big Ben is the name given to the massive bell inside the clock tower. It was built in 1858. Many tourists like to send postcards from big ben to their friends and family,and inside the Elizabeth Tower is the Houses of Parliament. The Elizabeth Tower is not open to the general public although UK residents can arrange a visit, But it gets a lot of attention from tourists Although it only can take a photo from outside. Finally, big ben it is also very popular among travelers worldwide, and also make money in tourism in England. And I think if you have a free time you must be visit the Elizabeth Tower because it will made you feel happy and Exciting! Thank you