Equestrian statue of Charles I, Charing Cross in the context of "Eleanor cross"

Central London is the innermost part of London, in England, spanning the City of London and several boroughs. Over time, a number of definitions have been used to define the scope of Central London for statistics, urban planning and local government. Its characteristics are understood to include a high-density built environment, high land values, an elevated daytime population and a concentration of regionally, nationally and internationally significant organisations and facilities.

Road distances to London are traditionally measured from a central point at Charing Cross (in the City of Westminster), which is marked by the statue of King Charles I at the junction of the Strand, Whitehall and Cockspur Street, just south of Trafalgar Square.

Trafalgar Square (/trəˈfælɡər/ trə-FAL-gər) is a public square in the City of Westminster in Central London. It was established in the early 19th century around the area known as Charing Cross. Its name commemorates the 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.

The area around Trafalgar Square has been a significant landmark since the 1200s, as distances from London are measured from Charing Cross. The King's Mews occupied part of the site until the reign of George IV, who moved them to Buckingham Palace, allowing the area to be redeveloped by John Nash. Progress stalled after the death of Nash in 1835, and the square did not open until 1844. It is faced by buildings including the National Gallery, St Martin-in-the-Fields, Canada House and South Africa House. The square also contains several pieces of public sculpture, including the 169-foot (52 m) Nelson's Column in the centre, which commemorates Vice-Admiral Horatio Nelson's victory at Trafalgar; an equestrian statue of Charles I; and the fourth plinth, which since 1999 has hosted a variety of artworks.

The Queen Eleanor Memorial Cross is a memorial to Eleanor of Castile erected in the forecourt of Charing Cross railway station, London, in 1864–1865. It is a fanciful reconstruction of the medieval Eleanor cross at Charing, one of twelve memorial crosses erected by Edward I of England in memory of his first wife. The Victorian monument was designed by Edward Middleton Barry, also the architect of the railway station, and includes multiple statues of Queen Eleanor by the sculptor Thomas Earp. It is located 200 metres (220 yd) northeast of the original site of the Charing Cross (destroyed in 1647), which is now occupied by Hubert Le Sueur's equestrian statue of Charles I, installed in 1675; both are along the Strand roadway.

Barry based the memorial on the three surviving drawings of the Charing Cross, in the Bodleian Library, the British Museum and the collection of the Royal Society of Antiquaries. However, due to the fragmentary nature of this evidence, he also drew from a wider range of sources including the other surviving Eleanor crosses and Queen Eleanor's tomb at Westminster Abbey. In this search for precedents Barry was assisted by his fellow architect Arthur Ashpitel. The coats of arms of England, León, Castile and Ponthieu appear on the monument.

Northumberland House is a 1752 landscape painting by the Italian artist Canaletto. Painted during his nine-year stay in Britain he depicts Northumberland House on the Strand by Charing Cross in London close to the location of the later Trafalgar Square. Canaletto was commissioned by the Westminster property's owner Sir Hugh Smithson, then 2nd Earl of Northumberland (later the Duke of Northumberland). Smithson was his most important patron during his time in England. The work shows Northumberland House at the middle of the eighteenth century. On the right of the painting is Hubert Le Sueur's Equestrian statue of Charles I

Northumberland House (also known as Suffolk House when owned by the Earls of Suffolk) was a large Jacobean townhouse in London, so-called because it was, for most of its history, the London residence of the Percy family, who were the Earls and later Dukes of Northumberland and one of England's richest and most prominent aristocratic dynasties for many centuries. It stood at the far western end of the Strand from around 1605 until it was demolished in 1874. In its later years it overlooked Trafalgar Square.