Google Arts & Culture - Explore collections of art and culture from around the world, both past and present.
Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
AMO: Daily Art Inspiration - Travel back in time to learn more about outstanding artworks
Pixel Studio - The Pixel Art Is Always Fun
Sketchfab for Museums - Browse thousands of cultural artifacts in 3D and VR
Piskel - Piskel is a website where designers online create sprites or pixel art.