Historic places inRideau Canal National Historic Site of Canada / Lieu historique national du Canada du Canal-Rideau
Ontario
- historic places
- 8historic places
- built
- 1838–1883built
Recognized by
- National 8
Defensible Lockmaster's House1840Photo: Parks Canada Agency / Agence Parcs Canada, Couture, 1989.
Lower Brewers Defensible Lockmaster's House1842
Defensible Lockmaster’s House1842
Storehouse, Lock Office1874
Lockmaster's House1883
Where to start
The most widely recognized places first, then the oldest.
Photo: Parks Canada Agency / Agence Parcs Canada, Couture, 1989.National1838Defensible Lockmaster's HouseAlso known as Old Sys LockstationThe Defensible Lockmaster’s House is located on a promontory overlooking the Rideau Canal near the lock at Old Slys Lockstation, as part of the Rideau Canal National Historic Site of Canada.
Photo: Parks Canada Agency / Agence Parcs Canada, Couture, 1989.National1838Defensible Lockmaster's HouseThe Defensible Lockmaster’s House, a component of Clowes Lockstation, is located four kilometres downstream from Merrickville on the west bank of the Rideau River, in the Rideau Canal National Historic Site of Canada.
Photo: Parks Canada Agency / Agence Parcs Canada, James De Jonge, 1990.National1838Defensible Lockmaster's HouseAlso known as Nicholson LockstationThe Defensible Lockmaster’s House is located in a prominent position overlooking the Rideau Canal and the area around Nicholsons Lockstation, in the Rideau Canal National Historic Site of Canada.
Built over time
The busiest decade was the 1830s, with 3 of the 8 places.
All 8 places
- 1840NationalHomesDefensible Lockmaster's HouseAlso known as Poonamalie Lockstation
- 1838NationalWaterwaysDefensible Lockmaster's HouseAlso known as Old Sys Lockstation
- 1838NationalHomesDefensible Lockmaster's House
- 1838NationalHomesDefensible Lockmaster's HouseAlso known as Nicholson Lockstation
- 1842NationalHomesDefensible Lockmaster’s HouseAlso known as Lockmaster's House
- 1883NationalHomesLockmaster's House
- 1842NationalWaterwaysLower Brewers Defensible Lockmaster's House
- 1874NationalWaterwaysStorehouse, Lock Office
On the map
Open the full mapThemes in Rideau Canal National Historic Site of Canada / Lieu historique national du Canada du Canal-Rideau
- Canals and waterways 8
- Verandahs and porches 6
- Stone 6
- Limestone 4
- Notable interiors 3
- Waterfronts and harbours 2
- Islands 2
- Open to visitors 2
Collections are Heritage Guide’s groupings, made from each place’s register description.
From the Canadian Register of Historic Places, as last updated on December 12, 2025.