Historically, the phrase going troppo came into prominence during World War II. It meant to be heat affected, one went off, a little mad in the heat of the tropics. This is the story of two architects who went troppo, but in doing so, found another state. For them it meant becoming acclimatised, not going off at all, but understanding the place. Going troppo was revealing—even enlightening—and it would provide the basis for a new practice of architecture in Australia’s Northern Territory.