The Township of Otonabee-South Monaghan has several landmarks with historic designation.
Designations of National Historic Significance
Serpent Mounds
Serpent Mounds was designated a National Historic Site in 2002.
Red Fife Wheat
The invention of Red Fife Wheat has been designated a National Historic Event. A plaque recognizing the accomplishment of David Fife stands at 104 Lang Road, Keene, Ontario.