Point Perpendicular is a point at the southern tip of the Beecroft Peninsula

Beecroft Peninsula

Beecroft Peninsula is a peninsula located to the north and east of Jervis Bay in south-eastern Australia. The peninsula forms the northern headland of Jervis Bay....

 and at the northern entry to Jervis Bay, in New South Wales, Australia. It is the location of Point Perpendicular Light

Point Perpendicular Light

Point Perpendicular Light is a lighthouse located on Point Perpendicular, a point at the southern tip of the Beecroft Peninsula, in New South Wales, Australia. It marks and the northern entrance to Jervis Bay. The historic lighthouse was active from 1889 to 1993 and is still present, though its...

, a historic lighthouse

Lighthouse

A lighthouse is a tower, building, or other type of structure designed to emit light from a system of lamps and lenses or, in older times, from a fire, and used as an aid to navigation for maritime pilots at sea or on inland waterways....

 which was active from 1889 to 1993, and a replacement skeletal tower which is active.

The lighthouse and its grounds are an exclave of the State of New South Wales, being separated from the rest of New South Wales by a strip of land which is itself an exclave of the Australian Capital Territory

Australian Capital Territory

The Australian Capital Territory, often abbreviated ACT, is the capital territory of the Commonwealth of Australia and is the smallest self-governing internal territory...

.