London, January 2001
Whitehall

2 blocks north of Parliament & Westminster Abbey, past the Treasury and Foreign Office, is Downing Street.  Looking west, Number 10 is the first townhouse to the right.

(This photo was taken through the iron fence bars, and you can't see the bobbies clustered around the gate to the right. They're quite focused on security; note the concrete barrier right before No. 10.)

Downing Street is about 2 blocks long, typical of the thousands of short, twisty, turny London streets.

Continuing north, past the Old Treasury & Scottish Office, and across from the Minstry of Defence, are the Horse Guards. 

Like the other ceremonial guards, these are at attention, not interacting with the tourists who walk up to pose with them, or even to pet the horses.  These guards do move slightly, keeping their eyes looking for trouble, to stay on their horses, and to keep the horses in position.

Behind these gates (west) are the barracks and parade grounds of the Horse Guards and, further west, St. James's Park, leading to Buckingham Palace, passing St. James's Palace and passing Lancaster, Clarence, Spencer, Marlborough, & Carlton Houses

The Old Admiralty is on the north side
of the Horse Guards Parade grounds.

An Old Admiral is still directing affairs on the gravel parade ground,
from the bronze at the right.
Long wave antennas are still hung from the building's towers.
St. James's Park would start to the right, with Buckingham Palace at the far end.

Out of sight to the right, cross Whitehall from the Old Admiralty, is Great Scotland Yard, home of the Metropolitan Police until 1890.

Looking East (towards Whitehall) at the 1910 Admiralty Arch (N. of the Old Admiralty).  Though named for its neighbor, it is dedicated to Queen Victoria.

Trafalgar Square, at the head of Whitehall, is through and to the left.