This page is all about the Earth planet on DBE:

This is the home to the most races in DBE. Earth has four cities that spread across the land. The center of all trade and socializing is Evolution City. Other cities near Evolution City are Satan City, Brick City and China Town. Each of them can be accessed by the subways that travel around Earth. Areas of interest are Korin's Tower, Crater Lake, Azure Ocean, Forest of Evolution, and Grand Park.