Exmouth, Western Australia
Exmouth was first used as a US military base during WW2 and became a cold war submarine base during the 1950s. The Very Low Frequency antenna array - 13 very tall antenna just north of Exmouth - was until recently the tallest man-made structure in the southern hemisphere and the base is named after 1950's prime minister Harold Holt who went missing off Portsea backbeach. It is only slightly ironic that a submarine communication station is named after him when som...