Humanoid robot training is booming around the world. Tech companies are rushing to build the robots for a market projected to reach $38 billion within the next decade.

An Australian company has created a significant evolution of the construction industry in the form of Charlotte, a spider-like robot capable of building houses.

Nearby stands a rocket ship that reaches toward the heavens with patriotic flair. Decorated in red, white, and blue, this towering creation embodies a distinctly American optimism—the same spirit that ...