Geometry Temple

An ancient ruler has decided to build a Geometry Temple in the form of a square-base pyramid made up of cubes with a side of $1$ meter (as illustrated below). 

The Temple has $100$ layers, where the bottom layer is $100\times 100$ meters and the top layer is a single cube. The surface of the Temple is supposed to be covered with gold. 

What is the total area of gold foil that is needed in order to accomplish this?