The first hydroelectric power plant in the world was built at Niagara Falls in 1895. Based on its success, a second one was added. The Toronto Power Generating Station opened in 1906. At its peak capacity, it created 132 megawatts of power. All of that energy was transferred to the city of Toronto. Since the plant closed in 1974, it has remained empty. There is nothing to see inside. Yet fans of architecture will appreciate the façade’s stunning Beaux-Arts design with Greco-Roman features.