Opened in 1855 as the centrepiece of the former Metropolitan Cattle Market, the seven storey Clock Tower offers magnificent views over London. The tower and the market’s impressive Grade II listed railings – built to withstand a bull stampede – are on English Heritage’s Register of Heritage at Risk.

Set in the middle of the 7.4 hectare (18.27 acre) Caledonian Park (originally named Copenhagen Fields) has a rich history – used variously as a place for sports and leisure, a cattle market and popular flea market.

It was also a place of political dissent and demonstration. Around 100,000 people gathered in the spot to march on Parliament in 1834 in support of the Tolpuddle Martyrs.