The peninsula’s tip is marked by the stunning Point Nepean National Park, originally a quarantine station and army base. There are plenty of scenic walking trails throughout, and at the tip is Fort Nepean, which was important in Australian defence from the 1880s to 1945. Start at the helpful visitor centre, which has walking maps, iPod audio tours ($13.90) and bike hire (per day $30.10). It's located at the historic precinct, which comprises some 50 heritage buildings to explore – including museums at the Quarantine Station, Hospital and Wash House, all featuring interesting exhibits.
To get to the fort itself you can park at the Gunners Cottage info centre (c 1933), from where it's a 2.6km walk or bike ride. Alternatively there's a hop-on/hop-off bus (adult/child return $10/7.50) departing every 30 minutes from 10.30am to 4pm, passing the visitor info centre or Gunners Cottage.