The "World’s Tallest Tower" may be the greenest

When most super-tall skyscrapers are built, they are the crown jewels of the skylines in each city – acting like an exclamation mark on their perceived world status. With a newly proposed tower that is scheduled to begin this month in China, the skyscraper itself will be the skyline.

These skyscrapers are built out of wood

At the 2013 eVolo Skyscraper Competition, a trippy entry called Big Wood made waves and earned an Honorable Mention.