What are the must-see attractions in Toronto?

Niagara Falls: As one of the three major waterfalls in the world, Niagara Falls is located on the Niagara River in northeastern Canada, and is also known as one of the seven wonders of the world. Its ingenious natural landscape, mysterious and romantic cruise ship "Girl in the Fog" and Rainbow Bridge, known as "Honeymoon Bridge", make Niagara Falls the first choice for countless newlyweds to spend their honeymoon.

Toronto Zenith Tower-Sky Dome: Toronto Zenith Tower is the world's first gymnasium with an omni-directional retractable roof. Its roof is mainly composed of four cover plates, three of which are freely retractable. It takes only 20 minutes to open or close the roof, and its moving speed is 2 1 m per minute, which is located next to the CN tower.