What you're looking at is a striking piece of public art titled "Wave Wall" by Ned Kahn, located in Alameda. This concrete structure isn't just an abstract sculpture; it's a clever and immersive representation of the powerful forces of the natural world.

The "Wave Wall" is designed to create an artificial wave environment. The sloped, angled concrete forms are meant to mimic the movement and impact of ocean waves, and the number "66" etched into its side might refer to a specific measurement or a conceptual aspect of those waves, although its exact meaning is part of the artwork's subtle intrigue. The design allows water to flow over and through it, illustrating the dynamic interaction between land and sea, even in the relatively calmer waters of the San Francisco Bay.

Ned Kahn is known for his environmental art that often incorporates natural elements like wind, light, and water to reveal scientific principles and create interactive experiences. "Wave Wall" serves as a unique educational and contemplative space, inviting viewers to consider the physics of waves and the constant motion of the water around them. It transforms the mundane concrete of everyday infrastructure into a dynamic and thought-provoking artistic statement, fitting perfectly with the scenic bayfront location.