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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, ASLA • Principal

Jón is a Registered Landscape Architect with over twenty years experience in zoo planning and design. A native of Iceland, Jón has extensive knowledge of natural animal habitats and environments. His focus is to create naturalistic, environmentally friendly exhibits that enrich the experience for both the animal and visitor. Jón’s design expertise together with his leadership skills create a positive project environment that has garnered award-winning results — from the African Savanna to the South American rainforests.

“What I am most proud of is our commitment to ethology design. As with immersion habitat design and flexible habitat design, CLR continues to lead the charge.”

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.


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