Right outside the Charing Cross tube station in the legendary Trafalgar Square.
Anytime there is a party in London, it's going to be here, and presided over by Lord Nelson (the naval hero atop the column)
Here's a nice shot as you proceed from Nelson's Column down Whitehall towards Big Ben and Parliament.
If you are at Trafalgar, you can expect to run into a few pigeons. Let me rephrase that. You can expect a scene from Alfred Hitchcock's "The Birds." Behind the Square is the National Gallery.
Tis I, at the base of Nelson's Column. You know, there is such a strong reference to Lions throughout the city, you are almost under the impression that they used to run wild across the British Isles.
Now, hop on the Piccadilly Line to: