If you are coming from the highway A4 take the exit Kodersdorf and drive on the B115 towards Görlitz. You will drive down a valley and in that valley you turn left onto the S127 towards Rothenburg. Approx. 2 kilometers behind the village of Zentendorf is "The Secret World of Turisedia" (on turistic signs still named Kulturinsel Einsiedel) located on your right side. The the car parking is situated on your left hand side.
Her you come to the Google Route planner.
At the train station in Görlitz you can take either bus 139 or 140 to the stop Zentendorf/Kulturinsel, which is situated around 2 km after the village Zentendorf (please ask the driver to tell you, when you get to the stop and don't get off in the village).
The timetable and prices of the bus you can find here.
Those who would like to actively enjoy the way to the cultural island - Kulturinsel Einsiedel- can cycle along the Oder-Neisse bicycle path through fields, flowering meadows and pine forest.