This past weekend, a family picnic was held, with free tours, concerts and theatrical shows as well as fencing lessons, presentations of period costumes and antique arms, and balloon trips.
The picnic was part of wider anniversary celebrations that began in January and run until 2024.
The reconstruction effort started in Warsaw in 1971, more than a quarter century after the war.
The first phase of the project was completed in 1974, and the restored Royal Castle building reopened to the public in 1984.
Elżbieta Krajewska has the story.
Click on the audio player above to listen.