Create a colorful and whimsical cityscape illustration with pastel colors, showing a bustling, surreal community. Include playful, cartoon-style characters interacting in various ways across multiple levels of buildings, featuring elements like people in space suits, giant animals, floating UFOs, oversized objects (e.g., teacups), and rainbows. Each building should be unique in color and shape, with characters looking out of windows, relaxing on balconies, and interacting with fantasy creatures. The scene should have a lively and imaginative atmosphere, resembling a dreamlike, utopian city wit