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Twelve Hills Nature Center: From Urban Blight To Urbane Prairie
In 2004, a competition to design Twelve Hills?EUR??,,????'?????<???EUR? new entrance was won by Carolyn Perna, a neighborhood resident and landscape designer for TBG Partners?EUR??,,????'?????<???EUR? Dallas office, which provided pro bono services for design and construction documents. After four years of fundraising and design work, construction began on the new trailhead entrance and was completed in early 2010.
Tucked away behind a 2004-built primary school and tree-lined neighborhood streets in north Oak Cliff, a more-than-100-year-old south Dallas community, Twelve Hills Nature Center is home to acres of wildflowers and native plants, dozens of bird and butterfly species, and trails with exceptional learning opportunities. The notion of such a valuable, naturalistic tool for education and recreation in this setting seemed unfathomable a decade ago. When the land that previously housed rundown apartments was finally demolished by the city in 1992, this area was more urban blight than anything resembling an urban prairie.
Neighborhood Groups Sought To Restore the Prairie
Now complete and an undeniable community asset, Twelve Hills speaks to the great efficacy of dedicated grassroots efforts. The idea for this inner-city environmental educational and recreational facility grew from a 2000 townhall meeting concerned with the future use of the re-naturalized 20-acre site, which had been seized for nonpayment of taxes. Neighborhood groups sought to restore the land to its native state as a prime example of Texas blackland prairie. Ultimately, 10 acres were used to build a second campus for Rosemont Primary School, Twelve Hills Nature Center bought more than five acres and a private developer purchased the remainder for upscale residences.
By 2002, neighbors were facilitating cleanup events, arranging nature walks and obtaining 501(c) 3 status for an organization that could negotiate for the land.
Quiet and Protected Spaces
The design gracefully draws patrons into the urban prairie and provides quiet, protected spaces for repose. The site?EUR??,,????'?????<???EUR?s rolling terrain inspired overlapping stone walls that accommodate signage and donor recognition inscriptions while openings (or windows) frame views deeper into the preserve. The design exclusively employs native plants and most paving is porous.
A dynamic model for urban planning and community organizing, Twelve Hills Nature Center has provided an extraordinary educational tool for multiple nearby schools and a resplendent natural recreational environment for the community?EUR??,,????'?????<??oedemonstrating the grand possibilities that exist even with small tracts of land.
About Carolyn Perna ?EUR??,,????'?????<??oe Carolyn has extensive experience working on both national and international projects, and is committed to designing quality, functional spaces. Carolyn?EUR??,,????'?????<???EUR?s broad spectrum of experience combined with a pragmatic, responsive approach to design results in sophisticated project solutions that uniquely respond to their site context. Carolyn received a Bachelor of Arts and Master of Arts in Landscape Architecture with honors from Scotland?EUR??,,????'?????<???EUR?s Heriot-Watt University and is a resident and neighborhood mom of Dallas?EUR??,,????'?????<???EUR? Oak Cliff neighborhood.
Francisco Uviña, University of New Mexico
Hardscape Oasis in Litchfield Park
Ash Nochian, Ph.D. Landscape Architect
November 12th, 2025
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