This video explores five of the most useless megaprojects in the world—massive investments that resulted in little to no practical use. Starting with Hawaii’s Interstate H3, an engineering marvel that ...

Abandoned, Delayed, and Failed Megaprojects. In this video, we go over the Most Useless and Expensive Megaprojects in the World including Forest City, Hawaii's Interstate H3, and the Strangest City in ...

In central Oahu, the Aiea Loop Trail takes hikers along the Halawa Valley ridge and past a World War II crash site.