London's least known landmark

The last substantial remnant of what was once one of London's major markets - this lies between Caledonian Road and York Way. It's the clock tower of what was the Caledonian Market (or the Metropolitan Cattle Market). This was a huge live meat market which opened in the 1850s, saw steady decline in the early twentieth century and eventually became a bric-a-brac market which finally closed in 1963. The clock tower is well kept, though showing the wrong time. The wonderfully squat market pubs which were part of the original design are still standing, most of them, but barely so.