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The Telegraph Avenue Windmill is a small, windmill-shaped building near the former sites of the Lemmon Herbarium and Idora Park.

There have been various theories about the origin of the windmill over the years, but according to the owners of Steele's Discount Scuba a couple of doors over, and also according to Gail Lombardi of Oakland's Cultural Heritage Survey:
 (a) it was not part of Idora Park
 (b) it was not part of a miniature golf course
 (c) it was a lemonade stand.

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