There are many surviving ancient and sacred spaces around the world. Some are protected and used for spiritual practice; some have become popular tourist destinations; and some are left to the whims of a changing culture. These sacred spaces range from human constructions to natural lands built only by the elements. From the ancient Greek temples in Agrigento, Italy to the ruins in Arizona’s Wuptaki National Monument, these spaces resonate with many contemporary people in their work to honor, reconstruct, practice and celebrate time-honored religious traditions, the associated cultures and surrounding ecology. Unfortunately, many of these unprotected spaces, whether purely natural or human-engineered, are open to threats posed by modern construction in the name of so-called “progress” and industrialization.