Answer: The Reverse Falls at Cobscook Bay near Lubec, Maine, are a fascinating natural phenomenon caused by the extremely high tidal range in the area. The "reversing" effect occurs when the strong tidal currents flow in opposite directions, creating noticeable surges and turbulent water at certain times. While the website may say you can visit anytime, the most dramatic and visually interesting moments happen around specific tidal conditions.

Answer: Lubec, Maine, is the easternmost town in the United States and sits right on the Bay of Fundy, which is famous for having some of the highest tides in the world. While the highest tides of the Bay of Fundy occur further north in Canada (especially around the Minas Basin in Nova Scotia and the Hopewell Rocks in New Brunswick), you can still observe noticeable tidal changes from Lubec itself. You don’t need to cross the border to see the tide rise and fall, though it won’t be as dramatic as the Canadian sites.