Standing with your back to the Tower, you will have a garden ahead of you. Several paths open up here, but you're going to take the middle one, a narrow path that snakes up the small gardens. Atop this path, you will find yourself at the Quinta’s main path, and if you look to your right, you will see the path you took from the Stables to the Tower. However, keep looking in front of you, and there will be another wide path going up. Start the climb up that path. Soon, you will find, to your right, a house with a banner indicating it to be the Generator House. Stay on the same path and continue after the house, but keep your eyes to your right and look up. The incinerator is purposefully very discreet and extremely hard to spot, so it requires attention! In the back of the house, right before the road turns left, you will see what looks like a broken tree trunk rising tall, but look closer: it’s actually made of stone, and at the very top, you can even see brickwork with little holes in it. Stand in front of it to learn about it: this is Regaleira’s incinerator.