An architectural allegory, and designs for a stage set c.1492-4 (pen & ink on paper)

A monstrous head, legs and tail have burst out of a large classical building, which pursues a man towards a flying woman surrounded by angels. She holds her arm over him in a gesture of protection; in her hand is what may be a pair of dividers, in which case she would be the personification of Architecture, perhaps then protecting the man (an architect? Leonardo himself?) from the terrors of an out-of-control building project. Turning the sheet anticlockwise, we see a representation of the heavens, with a figure seated on a globe surrounded by flames, and small objects or rays of light falling through the clouds below.