Fort Hommet is a defensive structure on the Vazon Bay promontory in Castel, Guernsey. It was built on the foundations of defensive structures dating back to 1680, and includes a Martello tower from 1804, later additions during the Victorian period, and bunkers and fortifications constructed by the Germans during World War II.

Guernsey is the second largest island in the Channel Islands, a hidden gem of the British Isles, less than an hour's flight from the United Kingdom. It is the largest island in the Bailiwick of Guernsey, which includes five other inhabited islands – Alderney, Herm, Jethou, Lihou and Sark – along with numerous smaller islands and reefs. The population of the bailiwick was 63,950 in 2022.