DHRotterdam Zoo--New Giraffe House--Architect speak.

Quote from LAM Architects(famed circus Publicist Roland Butler couldn't have said it better):

The Savannah House, with its specific characteristics, is comfortable for the animals, user-friendly and energy efficient/effective. Sustainability is not only reflected in the energetic concept of the design but also in, plan and materials including untreated wood with FSC-label and grasses as reed and pressed bamboo. By carefully selecting and applying the right materials the building is nearly free of maintenance, convenient for operating costs, but also for the environment. Less maintenance means even less annoyance for the animals, the public and less environmental harassment.