* In the Wits Path, Indy collects the parts for a hot air balloon, assembles them, and inflates it via a thermal vent in the mountains.
* The Ascension Machine itself. It's a massive tower in the very center of Atlantis, with bridges, lights, and lava fountains all around it, and was designed to transform people into ''gods''. Although as you might imagine, it's not very good at making gods and very good at making grotesque mutants instead.