This building paper model is designed by Papermau. The model is from the video game "Assassin‘s Creed". It is a simple papercraft, it's just one page. The Palazzo Auditore was the home of the noble Auditore family within the city of Florence. The building was easily recognizable by the flags bearing the Auditore family emblem.
You can download this building papercraft from here: Assassin‘s Creed - Palazzo Auditore Free Building Papercraft Download