Egg Castle

Egg Castle is Dr. Eggman's was a highly technological fortress and Dr. Eggman's base of operations. It served as Eggman's secret base of operations on Dens as the doctor plotted to take over the planet.

Appearance
Eggman's Secret Base resembles a Colossal Sand Castle. The layout of Eggman's fortress extends into the foundation of the island. In front of the hill that the fortress stand on is the main entrance to the lair which is surrounded by several pillars. The center of Eggman's lair is a white and sterile-looking futuristic fortress on the top of the island with an antenna in the shape of Eggman's mustache, an outer shell surrounding the lower section, and the Eggman Empire logo on the side.

Defenses
The lair possesses several dangerous defenses to protect it against intruders and invaders. In terms of armament, the walls of the fortress' outer shell is covered in laser gun turrets and laser grids for inward defenses against intruders.

Interior
In addition to being the central for Dr. Eggman's planning of his evil plots and creation of his robot hordes, the lair also serves as the doctor's residence and living quarters. The lair includes the following areas:
 * Dr. Eggman's office: A large room shaped like the silhouette of Dr. Eggman's head, with a lone chair and desk with touchpad controls. Features holographic screens for surveillance footage recorded by Eggman's robots.
 * Living room: A lone room connected to the laboratory. Features furniture like a sofa, a coffee table, a tall lamp and a book case embedded in the wall.
 * Laboratory: A long room connected to the living room where Eggman tinkers with his robots and other subjects. Features a pop-up screen for outside surveillance.
 * Shoe closet: An enclosed room with several selves filled with pairs of Dr. Eggman's boots.
 * Rollercoaster room: A bright room containing a rollercoaster, whose entrance is colored a festive red and yellow.
 * Hangar: A hangar large enough to hold the immense group of Eggman's Battleships.