From the outside, this café in Hanoi, Vietnam looks fairly traditional with a tile façade that resembles fish scales and a heavy wood door. But inside hides a thriving garden centered around a koi pond. Farming Architects designed the space as a small, self-contained ecosystem with an indoor waterfall and an aquaponic vegetable garden. The café is nestled in an existing three-story building in Hanoi to which the architects added a steel frame.