This iconic street stretches between the famous Parliament Square and Trafalgar Square, surrounded by key British government buildings. On its west side, visitors can find Horseguards Parade and the secure entrance to Downing Street.
On the east side of the street stands the grand Banqueting House, a remarkable piece of architecture. At the heart of the street, the Cenotaph commands attention. Erected after World War I, this war memorial holds deep significance as the focal point for the annual Remembrance Day ceremony on 11 November.
Source - https://en.wikipedia.org/wiki/Whitehall