Globus Cassus

Globus Cassus is an art project and book by Swiss architect and artist Christian Waldvogel presenting a conceptual transformation of planet Earth into a much bigger, hollow, artificial world with an ecosphere on its inner surface.

Earth's crust, mantle and core are gradually excavated, transported outwards and then transformed to larger strength and reduced density.

Since the stationary cables would stay clear inside the moon's trajectory, the construction of Globus Cassus would not alter the Earth-Moon system.

However, on a planetary scale the proportions would be altered, with Globus Cassus being only slightly smaller than Saturn, the Solar System's second-largest planet.

Globus Cassus' equator zones are equipped with a system of trenches and moulds that will become rivers, lakes and seas as soon as the water has settled.

Along with massive amounts of seed for all existing plants, the regions of high cultural value, that need to be conserved and reapplied on Globus Cassus have been stored in the skeleton nodes which touch the towers.