Cache is not at posted coordinates. This is a bonus cache for completing the nearby adventure lab "Historic Downtown Niagara Falls".
To obtain the final coordinates for this cache, you must complete the adventure lab and record the numbers for the coordinates as you go along. They will be in the 'journal entries' section in the lab stages.
Final coordinates:
N43 a.b
W79 c.d
Mobile app smart link
Use your phone's native QR code scanner to open this adventure in the Adventure Lab mobile app, or share the following URL:
https://labs.geocaching.com/goto/DowntownNiagara
NOTE: When you have completed the Adventure Lab, you can scroll to the bottom of the page to view all journal entries. This may be necessary as when you complete all 5 locations you get a CONGRATULATIONS, but don't see the last entry.