To the west, Puget Sound (which includes Elliott Bay). To the east, Lake Washington. Seattle is also bisected by the Ship Canal, which connects Puget Sound and Lake Washington, via Portage Bay, Montlake Cut, Union Bay, Salmon Bay, and the Chittenden Locks.

Yes. You can take the Welland Canal, a ship canal that runs 42 km (27.0 miles) from Port Colborne, Ontario on Lake Erie to Port Weller, Ontario on Lake Ontario.

Some of Seattle human and physical characteristics are the Space Needle, Hiram M. Chittenden Locks, Metro Transit Tunnel. Physical characteristics are Lake Washington, Snoqualmie Falls, Elliot Bay, Puget Sound, Lake Washington Ship Canal, or Lake Union. There are many more but those are some.

The Welland Canal.

Lake Erie. The canal was named the Erie Canal.