I would try to compile a few of the beautiful artworks I have found (would be biased with my own understanding; not in any order; work in progress and by no means created with an intention that there is a list of beautiful artworks):

Art in science/math/nature/literature

• YouTube channel of Grant Sanderson (https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw)

• On imaginary numbers: https://www.youtube.com/watch?v=T647CGsuOVU

• On butterfly scales: https://www.youtube.com/watch?v=zsjyWg-Lhek

• CS50 lectures by Prof. David J Malan (Harvard University) and his team. Watch this to experience a theatrical teaching experience! (https://www.youtube.com/playlist?list=PLhQjrBD2T382_R182iC2gNZI9HzWFMC_8)

Art in motion pictures 

• Heidi, Girl of the Alps (1974). I have watched the Japanese edition. It will somehow make you a better human being.

• 'My neighbor Totoro'

• 'Children of heaven', 'The color of paradise'

• 'The Apu trilogy', 'Meghe dhaka tara', 'Kharij', 'Piravi'

• 'Where is the friend's house?', 'Close-up' 

• 'Dreams', 'Ikiru'

• 'The man from Earth', 'Arrival', 'Interstellar'