Directions:

St. Thomas Hospital, where Crawford discovered strontium, only south wing remains, Bourough High Street - N51 30.31 W0 05.36.
Old Operating Theatre Museum, historic part of St. Thomas Hospital, 9a St. Thomas Street - N51 30.29 W0 05.32.
Guy's Hospital, historic partner with St. Thomas Hospital, St. Thomas Street - N51 30.24 W0 05.19.