Eleanor Cross

Meaning to snap this tower outside Charing Cross station for some time but never knew what it was. Today I did and then found out. See below
The name of the area, Charing, is derived from the Old English word "cierring", referring to a bend in the River Thames

The addition of the name "Cross" to the hamlet's name originates from the Eleanor cross erected in 1291–94 by King Edward I as a memorial to his wife, Eleanor of Castile and placed between the former hamlet of Charing and the entrance to the Royal Mews of the Palace of Whitehall (today the top of Whitehall on the south side of Trafalgar Square).

The Victorian replacement of the original Eleanor Cross; from which the area derives its name.
[source: Wikipedia]