Big Ben is the nickname for the Great Bell of the striking clock at the north end of the Palace of Westminster in London, England, and the name is frequently extended to refer also to the clock and the clock tower. — Wikipedia
Westminster Abbey, formally titled the Collegiate Church of Saint Peter at Westminster, is a large, mainly Gothic abbey church in the City of Westminster, London, England, just to the west of the Palace of Westminster. — Wikipedia
St James's Park is a 23-hectare (57-acre) park in the City of Westminster, central London. It is at the southernmost tip of the St James's area, which was named after a leper hospital dedicated to St James the Less. — Wikipedia
Buckingham Palace is a London royal residence and the administrative headquarters of the monarch of the United Kingdom. Located in the City of Westminster, the palace is often at the centre of state occasions and royal hospitality. — Wikipedia
St James's Palace is the most senior royal palace in the United Kingdom. It gives its name to the Court of St James's, which is the monarch's royal court and is located in the City of Westminster in London. Although no longer the principal residence of the monarch, it is the ceremonial meeting place of the Accession Council, the office of the Marshal of the Diplomatic Corps, and the London residence of several minor members of the royal family. — Wikipedia
Horse Guards Parade is a large parade ground off Whitehall in central London. It is the site of the annual ceremonies of Trooping the Colour, which commemorates the monarch's official birthday, and Beating Retreat. — Wikipedia
Downing Street is a street in Westminster in London that houses the official residences and offices of the Prime Minister of the United Kingdom and the Chancellor of the Exchequer. Situated off Whitehall, it is 200-metre (660 ft) long, and a few minutes' walk from the Houses of Parliament. Downing Street was built in the 1680s by Sir George Downing. — Wikipedia
Somerset House is a large Neoclassical complex situated on the south side of the Strand in central London, overlooking the River Thames, just east of Waterloo Bridge. The Georgian era quadrangle was built on the site of a Tudor palace originally belonging to the Duke of Somerset. The site of Somerset House stood directly on the River Thames until the Victoria Embankment parkway was built in the late 1860s. — Wikipedia
Covent Garden is a district in London, on the eastern fringes of the West End, between St Martin's Lane and Drury Lane. It is associated with the former fruit-and-vegetable market in the central square, now a popular shopping and tourist site, and with the Royal Opera House, itself known as "Covent Garden". The district is divided by the main thoroughfare of Long Acre, north of which is given over to independent shops centred on Neal's Yard and Seven Dials, while the south contains the central square with its street performers and most of the historical buildings, theatres and entertainment facilities, including the London Transport Museum and the Theatre Royal, Drury Lane. — Wikipedia
Trafalgar Square is a public square in the City of Westminster, Central London, established in the early 19th century around the area formerly known as Charing Cross. At its centre a high column bearing a statue of Admiral Nelson commemorates his victory at Battle of Trafalgar, the British naval victory in the Napoleonic Wars over France and Spain that took place on 21 October 1805 off the coast of Cape Trafalgar. — Wikipedia
Leicester Square is a pedestrianised square in the West End of London, England. It was laid out in 1670 as Leicester Fields, which was named after the recently built Leicester House, itself named after Robert Sidney, 2nd Earl of Leicester. — Wikipedia
Piccadilly Circus is a road junction and public space of London's West End in the City of Westminster. It was built in 1819 to connect Regent Street with Piccadilly. In this context, a circus, from the Latin word meaning "circle", is a round open space at a street junction. — Wikipedia
Oxford Street is a major road in the City of Westminster in the West End of London, running from Tottenham Court Road to Marble Arch via Oxford Circus. It is Europe's busiest shopping street, with around half a million daily visitors, and as of 2012 had approximately 300 shops. It is designated as part of the A40, a major road between London and Fishguard, though it is not signed as such, and traffic is regularly restricted to buses and taxis. — Wikipedia