The Text on The Main Structure
(According to Google Translate)

Top Left
"of the Turks"

Top Right
"of the Tatars"

Bottom Left
"Nor are there any shortages of wealth"

Bottom Right
"Nor are there any shortages of strength"

Middle Arch
"And new successes" "increases with success"

The text on this structure does not appear to be original to the illustration, evident by how off-center "DE TURCIS" is. The illustrator, which clearly has great attention to detail and symmetry given how well-drawn this structure is, would not have lazily added block text so poorly like this. The only text on this structure that appears to be original to the illustration is the text on the middle arch given how it actually looks like it is engraved into the building itself.