El Cid Castle | |
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 Side view of the castle | |
 Location in Maricopa County and the state of Arizona |
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| Cities, towns and CDPs in Arizona with lists and images of historic properties, forts, cemeteries or historic districts |
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El Cid Castle was a landmark structure located on the opposite side of the western boundary of Sunnyslope, Arizona. The controversial castle, built by the late Dr. Kenneth Hall, was supposed to be a bowling alley which resembled a Moorish Castle. Construction on the structure began in 1963 and was completed in 1980.