The Mandelbulb Fractal https://www.maths.town/fractal-articles/mandelbulb/mandelbulb-all-powers/
Many people have dreamed of extending the Mandelbrot Set into three dimensions, but a problem arises because the complex numbers don’t naturally extend into 3D. The Mandelbulb fractal is an attempt to solve this dilemma. It is a 3D fractal created by extending some of the Mandelbrot’s geometric properties into the third dimension. The Mandelbulb isn't considered the true 3D Mandelbrot, but it is still a fascinating fractal.