Buoyed on by maintenance to sister site '88 Steps' in Great Malvern, here is a similar one for Worcester. You will go past the cricket club which is often inhabited by ducks after it has been raining. Please feel free to feed the ducks. Alternatively, it is a cricketing term meaning "nul points".
Worcester is an ancient city, famous for standing up for the royalists when besieged by Cromwell. Its emblem is the black pear. Don't try eating one - you'll break your teeth! Queen Elizabeth I was so pleased with its alternative use as a cannon ball that she decreed that this would be the emblem of the city. Two of the three King Charleses are honoured at the Guildhall, but there's no more room under cover, so I imagine the third one would have to stand out in the rain admiring the architecture. The first post-Norman Plantagenet king to be buried in England, John, is laid in the cathedral since nobody on the continent would have him. The city survived the blitz unscathed, but fell victim to comprehensive redevelopment in the 1960s, which took out a number of important landmarks such as the Elgar music shop and the last medieval cathedral lych gate in Europe. An impressive medieval house for the Dean in Friar Street was replaced by a car park. Rumour has it that the City official retired to Bermuda on the proceeds of the deal. The River Severn floods regularly. In 2007, instead of horses, there were fish flapping around the racecourse, and cricketers often have to use flippers and sometimes snorkels to get a game in.
Fifty images of the city centre can be found along a circular walk, starting at the large car park west of the river, entrance on Tybridge St on the one way system, and finishing at a riverside pub near the bridge. The walk should take around 60-90 minutes. Parking is free for 2 hours, and charged thereafter. If you want to go shopping, you could try going out and in again for another free 2 hours, but I've never tried this. Street parking nearby, by the river, is free after 5.45pm..You do need to start the route at the car park though.
These are arranged in five groups. What you must do is to work out the correct order of the images along the route. These are coded by letter. Taking the first one you find as zero, and the last as nine, you can then calculate the co-ordinates of the box. To help you, every group is coded the same way, and an additional help is that E=5.
Northings: 52º 11', then (AxD)-B=K; (KxF)+H-G= L; L gives first two digits, C gives the third.
Westings: 2º 13', then (ExC)+(IxI)=M; M gives the first two digits, J gives the third.
All should be visible along the route shown . Remember to look up as well as down. Some are more obvious than others. Locals can test themselves before setting out.The box should be accessible by wheelchairs in most weathers, but GZ can get very busy, so stealth is required, and the box should be rehidden carefully.
GROUP 1
A |
B  |
C  |
D  |
E  |
F  |
G  |
H  |
I  |
J  |
GROUP 2
A  |
B  |
C  |
D  |
E  |
F  |
G  |
H  |
I  |
J  |
GROUP 3
A  |
B  |
C  |
D  |
E  |
F  |
G  |
H  |
I  |
J  |