Lamoureux Park is a large park along the St. Lawrence River in Downtown Cornwall. It features trails for walking, biking, and many areas for community events and festivals.

Robert Moses State Park in Cornwall offers beautiful views of the Hudson River. Visitors can enjoy hiking, picnicking, and relaxing by the water.

St. Raphael's Ruins are the remains of a historic chapel located in Cornwall. They showcase beautiful stonework and offer a glimpse into the area's past.

Guindon Park is a large green space in Cornwall, Ontario. It offers walking trails, picnic areas, and beautiful views of the river, making it a peaceful escape for nature lovers and families.

The Moses-Saunders Power Dam is a large dam on the Saint Lawrence River at the US-Canada border. It generates hydroelectric power and allows boats to pass through on the river, making it important for energy and transportation.