Best London Tours from Barcelona

London is calling many travelers! The capital of the United Kingdom and home of its royal family is the world's most visited city in 2014 with more than 18 million international tourists per year. Situated along the River Thames, London was settled by the Roman as Londinium in 43 A.D. It is one of the world's most important cities, financially and culturally. From Big Ben to Downing Street and Buckingham Palace, London has many amazing attractions to see on a classic London sightseeing tour. It is also perfectly situated to easily join a tour to Europe's mainland through the Eurostar, or explore the classic English attractions with a London day tour to Stonehenge, Bath, The Cotswald, Windsor Castle, and more!