Where: Caledonian Park Clock Tower
This tower in north London is one of the capital's best kept secrets. Built in the 1850s, it was intended to be a central landmark at the Metropolitan Cattle Market, and at 46 metres in height, helped the animal traders visiting London find their way to the market. It now sits prominently in Caledonian Park, one of Islington’s biggest green spaces, and from the top of the 170-step climb is a magnificent view of the whole city.
In conventional times the tower is open for free tours that allow you to get up close to the clock itself, however these are on hold due to Covid-19. Until it reopens, its website offers virtual tours of the tower and the surrounding park.