Cap des Rosiers Lighthouse, Quebec
At 112 feet tall, Quebec's Cap des Rosiers lighthouse is Canada's tallest beacon. It's helped guide ships to safe waters since 1858. The tower sits at the mouth of the St. Lawrence River where it enters the Gulf of St. Lawrence, a rocky spot that has seen its share of shipwrecks. Among them was an Irish immigrant ship called the Carrick, which ran aground in 1847 and left 400 people dead.
The tower's light is set 136 feet above the sea. The tower itself is a massive structure with 7-foot-thick marble walls at its base that taper to 3 feet thick at the top.