Gibraltar Point Blockhouse

The first Lieutenant Governor of Upper Canada, John Graves Simcoe, planned defences for the mouth of Toronto Harbour at Fort York, along with the Gibraltar Point Blockhouse that was situated south of the harbour's entrance.

[6] The blockhouse was two storeys tall, with the upper platform having no roof and with its floor consumed with a traversing carriage for a single cannon.

[1] An oven permitted supplying the cannon with "hot shot"—cannonballs heated so they could start fires on the highly-flammable ships of the era.

[7] Most of the buildings on the Toronto Islands were destroyed by American forces at that time, excluding the Gibraltar Point Lighthouse.

During peacetime, the barracks at the Gibraltar Point Blockhouse were used to quarantine seriously ill individuals.