The Pulgas Water temple
In 1934, the first rush of Hetch Hetchy water flowed through the gravity-driven tunnel system, across the California's central valley. It swooshed through the base of the Pulgas Water Temple and into nearby Crystal Springs reservoir while San Franciscans cheered, and some conservationists frowned.
Looking up through the top of the temple to blue skies.
The Pulgas Water Temple was built at the terminus of the Hetch Hetchy aqueduct as a monument to the new water system. It's located within the watershed, just south of Crystal Springs reservoir. The plaque reads, "I give waters in the wilderness and rivers in the desert, to give drink to my people," a quote from Isaiah.