20. Grosvenor Square Gardens
This large garden square is located in Grosvenor Square and is dedicated to the 67 British victims of the September 11th 2001 terrorist attacks. A poem by Henry van Dyke is inscribed on the memorial stone, under which is buried a piece of the steel wreckage. Grosvenor Square Gardens is the centerpiece of the area, which is the property of the Duke of Westminster.