Zagreb is the capital and the largest city of the Republic of Croatia, its cultural, scientific, economic and political center. It is located in north-west side of the country on the southern slopes of the Medvednica mountain along the river Sava. Its favorable location between the Pannonian plain, the edge of the Alps and the Dinaric range has allowed it to become a crossing point for mass international communication. Zagreb is a captivating city with a population of nearly one million, with a rich history dating from the Roman times and rich cultural life. According to https://www.lonelyplanet.com/best-in-europe Zagreb is the number one of European destinations you need to see in 2017.
Zagreb is the hub of five major Croatian highways. Also due to rail and air transport it is well connected with all parts of Europe and the world.
The Zagreb International Airport “Franjo Tuđman” (formerly known as “Pleso”) is 17 km drive southeast from Zagreb.
There are a number of international flights by Croatia Airlines from/to Zagreb. For details, you should check with your local travel agency.
There is a bus-connection every 30 minutes from Zagreb Bus Station to Zagreb Airport and vice versa.
Trains and buses
German Railroad information can be found at http://reiseauskunft.bahn.de/bin//query.exe/en