Puget Sound Naval Shipyard, Washington

Puget Sound Naval Shipyard began life in 1891, and is now the largest naval shipyard in the Pacific Northwest. This densely built industrial area next to the town of Bremerton employs over 15,000 people. Though ships are rarely built here now, it is one of the Navy's busiest repair yards, updating and renovating submarines, battleships, and aircraft carriers. It is a major decommissioning site for ships and submarines, and is home to a portion of the the U.S. Navy's "mothball fleet." It is also home port to several active Navy vessels, including aircraft carriers in the Nimitz class, the world's largest war ship, powered by two nuclear reactors and manned by a crew of over 6,000.