Observatory
Niagara Falls Observation Tower
5 locals recommend,
Location
332 Prospect St
Niagara Falls, NY
Tips from locals
You can do this in a day and wouldn't need your passport if you stay on the US side. Zip on up, see the falls and come on back for dinner and a restful evening at MapleFell. You could also visit the Canadian Side should you choose, but don't forget your passport.