Two Castles in a day.
The guide will be holding a Wandria flag or board for easy identification. This is famous "Gare de Lyon" station in Paris. The exact coordinates are: 48°50'42.6"N 2°22'23.4"E
This is Gare de Melun train station. From here, the passengers can either take public transportation (train) or private taxi to return to Paris or other destination hotel or home.
The Wandria guide will accompany the tourist's group to the station, help them board the train back to Paris, and then conclude the tour there. The exact coordinates are: 48°24'59.2"N 2°43'34.0"E