First floor plan of the Amalienburg, Hofburg, Vienna I, by Nikolaus Franz Leonhard von Pacassi, showing layout and structure of REM and new construction project III/D1, drawn in 1763 with chalk, black pen and ink, and multicolored highlights.

Royalty-Free Standard Commercial licenses are granted for worldwide, non-exclusive and perpetual use, unless specifically noted otherwise. All Royalty-Free transactions are final. The Royalty-Free Standard Commercial license has no limitations and covers up to 15 users.