It is easy to get to the station by private car from Helsinki or Turku (125 km and 135 km respectively).
Address for GPS navigator: J.A. Palménin tie 260, 10900 Hanko, Finland.
TZS is accessible by train from Helsinki or Turku. Buy a ticket to either Hanko or Lappohja. If you come from Helsinki airport, first take the train towards Helsinki (trains in either direction are fine, since the airport track is a loop) and change at Pasila to the train towards Turku.
About one hour after leaving Helsinki (or Turku) you have to change trains at Karjaa. Take the local train to Hanko. NOTE! Until 2024 the trains from Karjaa to Hanko are replaced with a bus due to the electrification of the railway.
Arriving in Hanko there is a taxi station opposite the train- and bus station and from here you can take a taxi to TZS (18 km). Phone numbers for taxis are 0800 02120 (Menevä) and 0100 7300 (Lähitaksi).
There is also a train- and bus stop (but no taxi station) in Lappohja. From Lappohja the distance to TZS is 11 km.
Please note that Tvärminne Zoological Station is relatively remote and the nearest shops, post office, restaurants etc. are located in Hanko (18 km). If you arrive to the station by car you´ll pass the city of Ekenäs (a part of Raseborg), where you also can pic up supplies on your way.