Bassie & Adriaan are going to explore different islands
Bassie & Adriaan: De Geheimzinnige opdracht
Bassie & Adriaan are in Greece and have received Ghiolman (Sailing yacht) as means of transport from the Mysterious client for the assignment: The package is 42,195 meters from here (Athens). To find the package, they go with Ghiolman in search of the package and arrive at various islands such as the Greek island, Aegina. When they are on Aegina you will see this little church (Church of Agios Charalambos, in Aegina) in the background.
The Mysterious Assignment (1992) was filmed not only in Athens but also on the Greek island, Aegina.