If we are talking horror movie related spectacles we have:
Hopkin's Tomb.
Too many theories and stories to really list. Was he a pirate? Is his tomb really cursed? Read about it
here.
People come from all over to go ghost hunting in and around Port Colborne, but I don't think it's quite as interesting to them as it is to people living here. To know that this man once owned a lot of the buildings we walk by everyday. To be honest, I didn't thoroughly read that page until now and I got chills remembering all the times I was in the back room of Lewis Textiles and got this feeling like I was being watched.
Blue Ghost Tunnel
A lot of accidents happened here. A train wreck that killed 2 people in 1903. The Lock 6 disaster in 1928 where 8 men died, and exactly 2 years later another 8 men dies in the same place. There was a cemetery beside the tunnel and you can still find half burried, broken tombstones there.
Screaming Tunnel
Again, lots of different stories ranging from a girl being burned in a house fire and running to the tunnel where she died, to a girl being raped by her father and lit on fire in the tunnel. It's said that if you light a match or lighter in the tunnel it will blow out and that creams can be heard. Don't know if I believe this one, but it was a filming location for The Dead Zone so it's cool either way. There is also the home and gazebo used in the movie which you can find in Niagara on the Lake, Ontario.
As for not haunted or horror related places:
Lock 8 canal. We have lots of boats going through, which for some reason is a tourist attraction. I guess some people don't see boats on a daily basis like me.
Canal Days. aka Anal Days cause people here are so mature aka the second of 2 fun things to happen annually in Port Colborne. Small town, nothing to do except during the Lion's carnival and Canal Days. We have buskers, people dressed as pirates, tall ships, boat rides, food, a town crier competition, marine heritage museum, kite flying, fireworks, reptile exhibit, and a car show for 3 days, then things get boring again.