Sun Shrine (also known as Sun Palace in the SNES/PS version) is a location in Chrono Trigger that appears in 2300 AD. It appears in its original form in the Antiquity, although it is not accessible. The Son of the Sun resides inside.
The Sun Shrine is an ornate structure designed by the people of Zeal to house the Sun Stone, which was used prior to the advent of the Mammon Machine as their primary energy source. The palace floated west of the other islands and was sealed up after the Mammon Machine was created. It sank to the bottom of the ocean after the collapse of Zeal, where it remained until mysteriously appearing in the ruined future. They player characters acquired the Moon Stone there after defeating the palace's formidable guardian.