3. National Portrait Gallery
London's National Portrait Gallery is the hall of fame to the important personalities of British history. More than 2,000 portraits, dating back from the Middle Ages to the most recent history, are exhibited here: musicians, scientists, politicians and other important figures. Portraits have been created in different styles, techniques and in different eras. So, besides the works themselves, it's a great opportunity to trace how the art of portrait painting has changed over time. The gallery exhibits displays devoted to a series of portraits, and events. Although, for some of them you will need to buy a ticket.