Richmond Park is the largest of the Royal Parks, occupying some 2,500 acres. There are hundreds of red and fallow deer roaming free across it, presumably much happier without having to listen out for the 'View halloo!' of one of Henry VIII's hunting parties.
Within the park's bounds are the Palladian splendour of White Lodge and Pembroke Lodge, childhood home to philosopher Bertrand Russell and now a café. From the park's highest point, there are unobstructed views of St Paul's Cathedral, over 12 miles in the distance.
And don't miss the fantastic hidden garden within, Isabella Plantation, which in spring and summer is a riot of colour from azaelias and rhodedenrons.
After all that exploring, you can treat yourself at one of Richmond's great pubs or restaurants.