What kinds of building in Niagara Falls were opened by the Seneca Indian Tribe ?
Also on Goat Island are the Three Sisters Islands , the Power Portal where a huge statue of Nikola Tesla ( the inventor whose patents for the AC induction motor and other devices for AC power transmission helped make the harnessing of the falls possible ) can be seen , and a walking path that enables views of the rapids , the Niagara River , the gorge , and all of the falls .