No way! : This is definately not Niagara Falls, Canada - it's NF, USA!  Is this a huge glaring blunder? Nope. The explanation is actually quite simple:  This card was PRINTED and SOLD on the Canadian side by Circus World, which is in Canada, on Clifton Hill. They are simply advertising their own principality. The card is part of a series which all bear the same overstamp. You'll find a few of these sprinkled throughout the Niagara Falls Wing, here at the museum.