Inland Kerbal Space Center
From Kerbal Space Program Wiki
The second Kerbal Space Center is a second spaceport located north-west of the main space center. It is not possible to build and launch rockets from this space center and as it doesn't have a runway it isn't possible to start space planes their either.
It is located in a H-shaped valley with a smooth surface so the best way to reach the second center is to fly there by plane.
Third Space Center
The third Kerbal Space Center is a landing strip, hanger and, command center located on the largest of the string of islands east of the main Kerbal Space Center. The landing strip has a grass-like texture to make the Space Center harder to find from the air.
Spoiler: Easter egg
In the far right hangar, there are some old rusty parts lying around. These are the old models of the Command Pod Mk1, FL-T400 Fuel Tank and the LV-T30 Liquid Fuel Engine. Note that the command pod's scale is incorrect; it now appears to have a large radial size on the bottom, although it had a small one while still available as a part.
File:2013-07-30 00001.jpg
Picture of the old parts in hangar three
