2. At the center of Trafalgar Square, towering at 185ft is Nelson's Column with a 17ft statue of Nelson himself to commemorate the victory of the Battle of Trafalgar in 1805. To the northeast of the square is the Church of St Martin's-in-the-Fields, the official parish church for Buckingham Palace and the first free lending library. To the north of the Square is the National Gallery, which houses one of the world's richest collections of paintings. A short walk from Trafalgar Square is the area known as "West End" - home to six major theatres, including the famed Victoria and Apollo Theatres as well as Society of London Theatre (SOLT).
3. The British Royal Family is the group of close relatives of the monarch of the United Kingdom. The term is also commonly applied to the same group of people as the relations of the monarch in his or her role as sovereign of any of the other Commonwealth realms, thus sometimes at variance with official national terms for the family.
4. A Commonwealth realm is a sovereign state within the Commonwealth of Nations that has Elizabeth II as its monarch. The sixteen current realms have a combined land area of 18.8 million km² (7.3 million mi², excluding Antarctic claims), and a population of 134 million; all but about two million live in the six most populous states, the United Kingdom, Canada, Australia, Papua New Guinea, New Zealand, and Jamaica.