I recently was given these 2 cacti ( first 2 pics) and was told they are Queen of the Night. But I think this is incorrect. An online app suggested Easter lily cactus, and it is described as a rather small plant, again wrong. I was told that the ancestor ( great grand parent) of my cacti is many years old and huge, the flowers have an amazing smell, and that its owner built a special greenhouse for it. That my small plant will grow about 1 m tall in a couple of years. The pics with the flowers are the parent plant of mine.