At their closest points, Middle Bass Island is approximately 0.5 mi (0.8 km) north of South Bass Island and North Bass Island is approximately 1.0 mi (1.6 km) north of Middle Bass Island. The border between Ohio and Ontario is approximately 1.0 mi (1.6 km) north of North Bass Island.

The village of Put-in-Bay on South Bass Island is a popular tourist stop during the summer. Perry's Victory and International Peace Memorial,