Warsaw has two airports operating international flights:
- Chopin: main airport, major airlines, located within the city
- Modlin: cheap airline airport, only RyanAir flights from all over the Europe, located 35km from Warsaw
Warsaw can be reached by direct trains from Berlin, Amsterdam, Prague and Vienna.
Polish Railways schedule is available here: PKP. The main station is called Warszawa Centralna.
Astronomical Observatory of the University of Warsaw (in Polish: Obserwatorium Astronomiczne Uniwersytetu Warszawskiego listen)
Aleje Ujazdowskie 4 00-478 Warszawa