The film was shot in the USA, where all the university life was filmed, and in the Czech Republic, where views of the ancient city were needed. 

Filming Locations:

Street

In the Movie

Scene where Indy waits for a blind informant.

In Reality

The scene was filmed on a street in the western part of Prague.

Street

In the Movie

Scene where Cannon on the streets of Prague

In Reality

The scene was filmed On the stairs called the Town Hall Steps in Prague, on the western bank.