Postman's Park, St Paul's

Parkland Walk Sam Mellish/Getty Images

Not far from the site of the original headquarters of the General Post Office is an aptly named sliver of peace amongst the bustling city streets. Amongst the beautiful planting and tranquil benches is the touching 'Memorial to Heroic Self-Sacrifice' by George Frederic Watts, a series of plaques that commemorate ordinary people who lost their lives while saving others and may otherwise be forgotten.