The Prince of Siam's dog

I've gone blindly past this extraordinary monument on Mitcham's Corner (also known as Staples corner) probably 50 times: it's a forlorn patch of Cambridge, squashed up between 3 main roads with no obvious reason to visit (except Staples). But there is a hidden gem - a reason for anyone to visit. The Prince of Siam built a dog-trough there.

1934
In memory of Tony a dog who
gave him friendship and happiness
during his Cambridge years.
This trough is erected by his Royal
Highness Prince Chula of Siam