Trinity Square Gardens, just to the west of Tower Hill tube station, was once the site of the Tower Hill scaffold where many met their fate, the last in 1747. Now it’s a much more peaceful little place and home to Edwin Lutyens’ memorial to the marines and merchant sailors who lost their lives during WWI. Just outside Tower Hill tube station, a giant bronze sundial depicts the history of London from AD 43 to 1982, and on a grassy area next to the tube’s main exit there’s a stretch of the medieval wall built on Roman foundations, with a modern statue of Emperor Trajan (r AD 98–117) standing in front of it