Admiralty House is a one-storey, wooden gable-roofed, municipally-designated heritage building originally built as a wireless communications station in Mount Pearl, Newfoundland and Labrador, Canada.

Members of the Marconi Company were recruited in to the British Navy and sent to work in the wireless station under the command of Officer Lieutenant G.L.J.

[3][4][5][6] On February 24, 1918, the HM Wireless Station received the distress signal from the SS Florizel, which had run aground near Cappahayden.

[13][14] Since then, the building has housed a museum, with exhibits on the history of Mount Pearl, Guglielmo Marconi and wireless communications, the wreck of SS Florizel,[15] and HMS Calypso (later HMS Briton), a training ship for the Newfoundland Royal Naval Reserve before and during World War I.

In 2018, the museum halted construction work in its parking lot area when excavation revealed the footings of one of the original Marconi towers.

[16] In 2019, it partnered with local Landwash Brewery to brew a commemorative ale to mark the community's role in the 1919 transatlantic Daily Mail aviation prize.

[17] The ale was premiered at the launch of an exhibit detailing the story of the transatlantic air race from the perspective of St. John's socialite and photographer Margaret Carter.