The Lunar 100 (2003), compiled by Charles Wood, is a curated list of one hundred lunar features designed to guide observers through the Moon’s geology and surface evolution. The sequence begins with simple, easily visible structures and progresses toward increasingly subtle or complex formations, including craters, rilles, domes, basins and volcanic features. Unlike historical catalogues, the Lunar 100 is a deliberately constructed observing challenge that highlights key geological processes shaping the lunar surface.