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Bubblegum Alley is a tourist attraction in downtown San Luis Obispo, California, known for its accumulation of used bubble gum on the walls of an alley.[1] It is a 15-foot (4.6 m) high and 70-foot (21 m) long alley lined with chewed gum left by passers-by. It covers a stretch of 20 meters in the 700 block of Higuera Street in downtown San Luis Obispo.[1][2]