Portland Head Light was commissioned by George Washington and lit its first whale-oil lamp in January 1791, making it the oldest standing lighthouse in Maine. It was built of rubblestone hauled by oxcart from the surrounding fields of Cape Elizabeth. The tower has never gone dark for long.
That single fact explains why the best lighthouse boat tours in maine begin, almost without exception, from the working waterfront at 56 Commercial Street rather than from a landward parking lot.
Casco Bay is a drowned coastline. Glaciers scoured parallel ridges out of the bedrock; the sea rose and left the ridge tops behind as the Calendar Islands — long, narrow, oriented northeast to southwest, and numbered by early chartmakers at rather more than 365. Navigating them required light. Between 1791 and 1875 the federal government answered with a chain of towers: Portland Head Light on the western headland, Ram Island Ledge Light on its granite reef, Spring Point Ledge Light on the shoal off South Portland, Bug Light at the harbor mouth with its cast-iron Corinthian columns, and Halfway Rock Light standing alone in open water. Each solved a different problem. Each is still visible from the deck of a Casco Bay lighthouse cruise.
The wharves themselves are the second half of the story. Commercial Street was laid over filled tidal flats in the 1850s to serve the Grand Trunk Railway, and the ferry terminal that now dispatches sightseeing vessels shares its piers with lobster boats, mailboats and island commuters. This is not a purpose-built attraction. The same channel that carries a Portland Harbor lighthouse tour past Fort Gorges — a hexagonal granite fortress finished in 1865 and obsolete on the day it opened — carries groceries to Peaks Island and diesel to Great Diamond.
What survives is a rare continuity of function. The Fresnel lens at Portland Head was replaced by an aerobeacon in 1958, and the last keeper left in 1989 when the Coast Guard automated the station, yet the light still marks the same ledge for the same reason. Ram Island Ledge, built between 1902 and 1905 from 699 blocks of Vinalhaven granite, was designed to withstand the seas that wrecked the steamship Californian. Halfway Rock, twenty kilometres offshore, passed into private hands in 2014 and remains an active aid to navigation. Together they form the working spine of the coast, and the best lighthouse boat tours in maine tours exist because that spine is legible only from the water.
1 hr 45 min
