Mare Island Naval Shipyard is a unique monument to industrial power and naval glory located in Vallejo. Founded in 1854, it became the first U.S. naval base on the Pacific coast, playing a colossal role in the history of seafaring and shipbuilding for nearly a century and a half.

Today, it is a vast historic site and national monument occupying a huge territory on the peninsula. Over 500 ships were built here, including legendary 19th-century vessels and modern nuclear submarines. Visitors can see preserved buildings, Victorian-era architectural ensembles, and grandiose engineering structures.
The site attracts tourists with its authentic atmosphere: walking among the old docks and workshops, it's easy to imagine the bustling life at this shipyard decades ago. It is a must-see for anyone interested in technology, architecture, and naval history.