Hatch, CC, Nexus (old)

From the Starcraft to Scale project, here are my sketches of the main buildings for each race, compared with their basic units. The full project has over a hundred units in it, all scaled correctly.

The charts were later updated with improved artwork and altered sizes for the Starcraft Field Manual, but these are the original drawings from 2013.

Each of their appearances is largely based on their sprites from the original Starcraft, which is why they might look slightly off if you're only familiar with SC2.