4. Big Ben
The Big Ben is probably the most talked about tourist attraction in London after the Buckingham Palace. It’s located at the north-east of the Palace of Westminster and is currently the world’s third-biggest freestanding clock. Many might find it surprising, but “Big Ben” is actually the name of the bell that hangs in the clock. However, nowadays, both tourists and locals use the term to refer to the overall structure. Construction of the tower ended in 1856, which is as many as 13 years after it was started. This chiming clock stops very rarely and is widely known for its accuracy and reliability. In spite of the fact that the common people are not allowed to enter the premises of the tower, the clock is one of the most-visited tourist destinations in the city. It makes a charming sight even from a distance, particularly during night times when it gets illuminated.