Daily headlines and the recent crisis in the Gulf have brought the significance of wetlands to the forefront of the environmental movement. This unprecedented event underscores the urgency of preserving coastal estuaries and intertidal zones where biodiversity thrives and natural systems protect water quality and reduce shoreline erosion.
One of the few remaining such sites in California exists right here in Orange County- the Upper Newport Bay Ecological Reserve and Nature Preserve encompasses 1,000 acres of protected wildlife habitats, hiking trails, and coastal bluffs. This estuary, where freshwater meets saltwater to create mudflats and salt marshes, provides habitats for hundreds of species of fish, marine and wildlife, including endangered migratory birds.
Since 2000, the Back Bay has also been home to the Peter and Mary Muth Interpretive Center, an educational facility designed by local architect Ron Yeo, which hosts learning programs, exhibits, and interactive displays to raise local consciousness of California’s valuable coastal resources.
With a site-responsive form and innovative material palette, this project exemplifies a number of fundamental sustainable principles, starting with its relationship to the context and surrounding landscape. The earth sheltered (partially underground) structure is built into the bluffs at the north edge of the bay, making the 10,000 sq. ft. facility completely hidden from street level. As visitors proceed from the parking area, they experience a progression from the panorama vista of the Back Bay to the more intimate scale of the building.
The concept of earth sheltering serves a number of functional and aesthetic purposes. The constant temperature of the earth’s mass helps to regulate thermal comfort at the interior spaces and reduces energy consumption, while the carefully-designed integration of the structure into the bluff enables it to blend into the environment harmoniously. The roof, planted with native grasses, creates additional usable space above the structure, allowing visitors to view the Upper Newport Bay from a different vantage point.
The structure itself is clearly defined through the strong geometry of a concrete triangular waffle slab ceiling system that extends to the outdoor plaza, creating an intriguing juxtaposition of rational and natural forms. Concrete, the primary construction material utilized for this system, has a high thermal mass, which further increases the effectiveness of this passive, earth sheltered design.
A strong relationship to the exterior is highlighted by the building’s siting and orientation, and the large outdoor plaza transitions from built hardscape to existing landscape through subtle incorporation of natural site features, such as boulders and native plantings. An outdoor amphitheater provides space for lectures and presentations.
The reinforcing steel, or rebar, used in the concrete structure is comprised of 100 % recycled materials, and, like most of the materials used during construction, local sourcing and recycled content were primary considerations. The large exterior pivot doors were fabricated from leftover wood scraps, and concrete aggregate from local creek beds adds texture and depth at both the wall and floor planes.
The Peter and Mary Muth InterpretiveCenter is an inspiring example of how environmentally-sensitive architecture, coupled withcommunity-based education, outreach, and stewardship, can extend far beyond the building, engaging the site, its users, and the greater community.
Upper Newport Bay Preserve is managed by OC Parks, in partnership with Newport Beach Naturalists and Friends. For more resources on education and restoration efforts, as well as visitor information and other links, click here.
