Many streets and alleyways in the Sunbridge Road area remain sealed off and detectives have been seen taking a large number of objects away in plastic bags.
In June scientists revealed a "significantly radioactive" particle had been found outside the cordoned-off areain which more than 2, 000 radioactive objects and particles have been unearthed since October 2011.
It relies on LTE cellular and sensors placed around the area rather than GPS to navigate, in part because the terrain and location of objects constantly changes in parking lots.
The brown, rough-textured walls of the grand open-air lounge and dining area contain built-in shelves that display sculpture, porcelains, paintings and other art objects.