These days, the Golden Gate Park Polo Field in San Francisco is probably best known as the home to music festivals like Outside Lands. But for nearly 3 decades, polo matches were a regular sight on the field.

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Reported by Ryan Levi. Bay Curious is made by Olivia Allen-Price, Katrina Schwartz, Sebastian Miño-Bucheli and Brendan Willard. Thanks also to Sarah Rose Leonard, Lance Gardner, Kyana Moghadam, Amanda Font and Rebecca Kao for their help on this series.