Architectvra von Vestungen. Wie die zu vnsern Zeiten mögen erbawen werden, an Stätten, Schlössern vñ Clussen, zu Wasser, Land, Berg vñ Thal, mit jren Bollwercken, Caualiren, Streichen, Gräben vnd Leuffen, sampt deren gantzen Anhang vnd Nutzbarkeit, auch wie die Gegenwehr zu gebrauchen, was für Geschütz dahin gehörig, vnnd wie es geordnet vnnd gebraucht werden soll, alles ausz Grund vnd deren Fundamenten. Sampt den Grund Rissen, Visierungen, vnd Auffzügen für Augen gestellt
Daniel Specklin's 1589 German treatise on fortification, printed in Strassburg by Bernhart Jobin and illustrated by Mathieu Greuter, sets out how fortresses, towns and castles should be built on water, flat ground and mountains, with bastions, ditches and gun placements. Its engraved plates are plans, sections and elevations of star-shaped fortifications drawn with precise ruled lines, showing ground plans beside cut-away profiles; a designer could borrow their clean geometric layouts, hatched earthworks and the diagrammatic, lettered-plan manner of early modern engineering drawing.
