Like Noah's Ark, certain regions of the Earth preserve remnants of lost worlds. A flood of human settlement washes away some natural environments, leaving only fragments. These biological Arks provide endangered wildlife with a final toehold before extinction.
New Zealand Provides a Sanctuary
Fences, gates and other defenses protect a 1-square-mile valley located 10 minutes from downtown Wellington, New Zealand. The sanctuary, Zealandia, provides a fortified home for some of Earth's rarest and oddest creatures. Nearly 40 species of native birds live in the sanctuary, including iconic yet endangered kiwis and the takahē, a flightless bird once though extinct.