Mexico City is full of architectural masterpieces, but there is nothing like the experience of being inside a Barragán-designed home. Very few are still in good shape and open to the public, including Casa Luis Barragán (the architect's former home and studio that’s the only private residency to be named a UNESCO World Heritage site). Once you've visited this more famous house, get in touch with the owners of Casa Gilardi and ask for a tour. The last project Barragán completed before he died, Casa Gilardi is known for the huge jacaranda tree decorating its interior courtyard, and for a striking hallway with vertical apertures that bounce sunlight against brightly painted yellow walls and out into an electric blue room with an indoor pool. The artist James Turrell spent a month living in the house, taking black and white photos to study Barragán’s use of light.