Linz is located at the river danube. right between Passau/Germany and Vienna.
Getting to Linz City center by car:
Use the A1 motorway which connects Salzburg and Vienna from west to east. Leave A1 where the Autobahn A7 merges and follow the signs to "Zentrum"
Getting to Linz by plane:
Easy to get to "Blue Danube Airport which is 12 km from the City Center of Linz.
If need to know more about "TOURISMUS LINZ" here is a link. Be careful you can fall in love with this city.