For the past 14 years, Freiberg University of Mining and Technology has been publishing calendars of <i>Complex Beauties</i>, which include 12 stunning visualizations of complex functions each year, along with the background information and the related mathematicians. I would highly recommend reading the stories behind these complex functions. I have bought several copies as gifts in recent years and feel sad to learn that the 2024 version is the last one. I guess this is because Prof. Wegert may have retired.<p>Prof. Elias Wegert, the author who actively contributes to these calendars, also wrote <i>Visual Complex Functions: An Introduction with Phase Portraits</i>[1].<p>[1]: <a href="https://doi.org/10.1007/978-3-0348-0180-5" rel="nofollow">https://doi.org/10.1007/978-3-0348-0180-5</a>