Kaho'olawe
Kaho'olawe is the piko (navel) of the Hawaiian islands. It sits right in the center and was very important for navigation. On a clear day, from the Navigator's Chair (high on Kaho'olawe), you can see Lana'i, Maui, Big Island, and the currents running between the islands. In pre-contact days, Kaho'olawe was the starting point for long ocean voyages to Tahiti and beyond, and because of it's central position, navigators always aimed towards Kaho'olawe when they were coming to Hawai'i.
In the past few decades, it has become a central part of the Hawaiian renaissance.
It seemed disrespectful to take photos from the Navigator's Chair, so here's a view
from much lower on the island, on the shore cliffs, facing Maui.