I'm wondering what the church on this monks scroll is because I'm interested in the statue. The statue is found in the Hungarian parliament building. It's possible that it doesn't or never existed.
Is there a different subreddit where anyone could recommend I post this?
Possibly the Church of Our Lady, more commonly known as St. Matthias Church, in Budapest.
This church became a mosque after 1541, when the Turks captured Buda. When Budapest was liberated from the Turks in 1686, the church came under the control of the Jesuits, who made attempts to restore it (it had been badly damaged in the bombardment which re-took the city).
The church had a legendary role in the reconquest of Budapest, as, during the Christian bombardment of the city, a wall of the church collapsed, supposedly revealing a sculpture of the Madonna to the Turks who were praying inside the Mosque. This revelation was said to have demoralized them and contributed to the surrender the following day.
This is pure speculation, but a statue of a monk carrying plans for a church in Budapest, might be commemorating the Jesuit plans to rebuild this church after recapturing the city from the Turks?