CLR Design

Evolutionary Thinking in Habitats


Evolutionary Thinkers

We are architects, landscape architects, exhibit designers, graphic designers, animal lovers, environment-protectors, educators, researchers, visionaries, travelers, planners, parents, organizers, collaborators, implementers, and artists.

We are a team of passionate professionals who bring varied experience and steadfast dedication to every project. You’ll find us hard at work in our LEED Gold certified office in Philadelphia, as well as on the job from Cincinnati to the Serengeti to a location near you.


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Jeff Sawyer, ASLA, LEED AP BD+C
Senior Associate
Wayne Chang, AIA, LEED AP BD+C
Senior Associate

Larry Dame
Nick Iott, ASLA


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Gary Lee, AIA, ASLA • Senior Principal

An Architect and Landscape Architect, Gary is credited with planning and designing hundreds of projects throughout the US, Europe and Asia. He developed a workshop approach to strategic master planning that emphasizes dialogue among clients and all involved in the project. Gary’s workshop approach provides institutions with stability and growth, and has stood the test of time.

In 2017, Gary received the Wendy Fisher Award for Professional Excellence, the highest honor bestowed upon commercial members by the Association of Zoos & Aquariums. He is only the second architect to ever receive the award.

“It’s very gratifying that CLR remains loyal to the same ideology the firm was founded on over 30 years ago: ecologic-centric design based on the integration of animal behavior and well-being.”

Gary Lee

Greg Dykstra, AIA, LEED AP • Principal

A Registered Architect, Greg has been working in zoo planning and design with CLR for over twenty years. He has led numerous design teams on projects ranging from innovative multi-species exhibits with rich storylines to large-scale entry complexes boasting both state-of-the-art active animal exhibits and visitor amenities. Greg, a LEED-accredited professional, is particularly interested in helping zoos define and implement "campus ecology" — the rebuilding and operating of zoos in a sustainable way.

“Our greatest strength is that we go deeper. Being zoo-focused, we have expertise in every aspect of the project. We anticipate the challenges as well as see the potential.”

Greg Dykstra

Gregg Leicester, ASLA, LEED GA

As Principal and Registered Landscape Architect, Gregg has over 15 years of professional experience in zoo planning and design. Gregg has assisted in the design and management of a wide variety of projects ranging from small animal exhibits to large campus master plans. He has worked closely with many zoological institutions in developing comprehensive facility master plans that provide sound development strategies for short-term and long-range projects. In addition to working with clients all over the world, Gregg leads CLR's Capistrano Beach office.


Gregg Leicester

Mark Beauchamp, ASLA • Principal

Having directed projects from concept through construction for over 20 years, Mark works with zoological institutions and animal conservation organizations to develop award-winning and innovative projects. A registered Landscape Architect, Mark has facilitated many project design and community workshops that foster collaboration and consensus. Many of his activity-based exhibit designs provide the animals with wellness and choice — exploring, foraging and interacting — all to the amazement and joy of visitors and staff.

“In the end, it’s all about creating exciting and dynamic encounters — from the visitor’s joy in their discovery to the animals well-being in their habitats.”

Mark Beauchamp