Green Park
In front of Buckingham Palace and St James's, Green Park is popular with guests of Mayfair hotels as a place for their morning jog.
Once the site of a lepor hospice, this was long a favoured dueling ground and also the location for numerous balloon ascents and firework displays. Opposite 119 Piccadilly, you will see a mound, which was once an icehouse where Charles II's summer drinks were chilled.