Using our iTunes app we can confirm that both Apple Maps and Yelp think Big Ben is in the same place. Sadly its almost certain they are both wrong. Big Ben is not the name of the tower but the name of the bell inside the tower. Yelp has it catagorized as a landmark. Wikipedia also has a geo-tagged artcile for Big Ben at this locatoin, but the article does make it clear that the tower is called the Elizabeth Tower.