The Goa'uld Pleasure Palace is a structure located by the sea on P4X-347.
The palace was constructed by the Goa'uld for entertainment purposes. Its main attraction was the Light Matrix Hologram room which creates a huge, cascading light show that mesmerizes anyone who looks at it.
The Goa'uld vacated the palace when they abandoned the planet hundreds of years ago. A few years before 2001, Loran and his parents arrived at the planet and took residence in the palace. In 2001 SG-5 and SG-1 arrived at the palace. When SG-5 left and returned to Earth, they all died due to the exposure to the Light Matrix Hologram. SG-1 stayed on the planet and managed to find a way to turn off the Light Matrix Hologram gradually over a period of several weeks, so they would slowly get over its effects and not suffer the withdrawal that killed SG-5. After that they returned Earth and took Loren with them.