Observatory Hill, Sydney — Visitor Guide & Things to Do Nearby

The highest natural point in Sydney's CBD has been attracting attention for over 200 years, and every era left its mark on this strategic hilltop. Originally known as Windmill Hill, the site hosted the colony's first windmill in 1796, built by Irish convict John Davis to grind grain for the hungry settlement below. Then came Fort Phillip in 1803, a military fortification that never actually fired a shot in anger but stood ready to defend the young colony from any seaborne threat. In 1848, colonial architect Mortimer Lewis added a signal station at the top, giving the harbour its first systematic communication system for tracking ship movements. But the jewel in Observatory Hill's crown is the Sydney Observatory, built between 1857 and 1859 in the Italian Renaissance style. For over a century, astronomers here charted the southern skies and kept the colony's official time, dropping a time ball at 1pm daily so ships in the harbour could set their chronometers accurately. Since 1982, the Observatory has operated as an astronomy museum, and on clear nights, you can still peer through its historic telescopes at the same stars that guided sailors to Australian shores. The panoramic views from the hilltop park stretch from the Harbour Bridge to the Blue Mountains on clear days. Questo's Sydney discoveries always include this hilltop where convicts ground grain, soldiers stood guard, and astronomers mapped the universe.