Quarantine Station
From the 1830s onward, ship passengers who arrived with contagious diseases were isolated on this outpost in the shadow of North Head until pronounced free of illness. You can access the station as part of a guided tour, and now stay overnight in the four-star hotel and cottage accommodation known as Q Station; there are also two waterfront restaurants. There are day tours and five different evening ghost tours (the station reputedly has its fair share of specters) that depart from the visitor center at the Quarantine Station, and a "ghostly sleep-over" for those who want to spend the night in reputedly haunted rooms. Reservations are essential.
Visitors can also visit the site without taking a tour; however, if you want to dine, you must make prior restaurant reservations.