The Blockhouse Point Lighthouse is located on the west side of the entrance to Charlottetown Harbour. The coastal Lighthouse was built in 1876 and overlooks the Northumberland Strait and Charlottetown Harbour on the south shore of Prince Edward Island. This historic area was the site of large Mi'kmaq gatherings each summer and later on was the French Port La Joie and the British Fort Amherst. It was an important aid to the ongoing development of Charlottetown Harbour.

The Lighthouse is 12.8 m (42ft) in height from base to vane and is 17 m (56 ft) above high water level. The original structure at this location was built in 1851 and was simply a lantern mounted on a warehouse roof. It served as an outer harbour light. Citizens of the area presented a petition to the House of Assembly requesting that a lighthouse be built at the entrance to Charlottetown Harbour. Several days after the petition was presented, the sum of £10 was allotted to the building of a lighthouse. There was very little upkeep done to the 1851 light and by 1875, the structure was so deteriorated that only minor repairs were done as a new lighthouse was to be constructed.

The current Blockhouse Point Lighthouse is a considerable structure, the tower being broad and short and the two-storey flat-roofed dwelling being larger than most. The wooden, tapered Lighthouse is square in design with a shingled exterior. The flared cornices on the tower and dwelling and the pedimented tower windows were installed between 1890 and 1914. The cornices were originally bracketed and the windows were similar to the windows presently on the dwelling. The dwelling consists of a kitchen, a parlor and two bedrooms on the ground floor and four more bedrooms and a bathroom on the upper floor. The inside of the tower is lined with what was been described as 'tongue-and-groove wallboarding.' The tower is topped with an octagonal lantern. The light for a number of years has been a dioptric 4th order lens with a mercury vapour light source. Its flash pattern is: Flash 3 sec. Eclipse 1 sec.

The Blockhouse Point Lighthouse has seen several changes over the years. A porch that ran down the dwelling's south elevation was removed as well as the dwelling's roof balustrade and an attached shed. Other than these few changes, little restoration was been done to the Lighthouse.

The Blockhouse Point Lighthouse has seen several keepers. A.S. McNeil was 1st light keeper of the Blockhouse Point Lighthouse. Nelson Currie was the next light keeper. He started on May 6th, 1912 and it is assumed that he remained as light keeper until 1936. William Stanley Taylor became keeper of the lights from October 15th, 1936 until February 3rd, 1963. He then took on the role of caretaker of the Lighthouse until January 1st, 1967. The Lighthouse became automated on July 25th, 1962.

It was leased to Merrill Taylor until 2000 at which time the Coast Guard also discontinued the private leases to the New London Rear Range.

The Blockhouse Point Lighthouse has twice escaped planned replacement, first in 1963-64 and again in 1969-70. It was offered to Northern Affairs and Natural Resources in connection with Fort Amherst N.H.P in 1962.

To locate the Blockhouse Point Lighthouse, turn right off TransCanada Route 1 at Cornwall onto Route 19 Blue Heron Drive and follow it around past Rocky Point. Turn off towards Fort Amherst/Port La Joye National Historic Site and follow the road right to the end. You will end up in the lighthouse yard.