Signal Hill is a hill which overlooks the city of St. John's. It is the location of Cabot Tower which was built in 1897 to commemorate the 400th anniversary of John Cabot's discovery of Newfoundland, and Queen Victoria's Diamond Jubilee. The first transatlantic wireless transmission was received here by Guglielmo Marconi on 12 December 1901. Today, Signal Hill is a National Historic Site of Canada and remains incredibly popular amongst tourists and locals alike; 97% of all tourists to St. John's visit Signal Hill. Amongst its popular attractions are the Signal Hill Tattoo, showcasing the Royal Newfoundland Regiment of foot, c. 1795, and the North Head Trail which grants an impressive view of the Atlantic Ocean and the surrounding coast.
What tower was built in the late 18th century?