Togenkyo Island

Togenkyo is a floating island where Prince Toma and his half-animal warriors reside. It follows the currents; during the events of the second movie, it passes by a deserted south seas island on its way to Japan.

Geography
The island is mostly uninhabited, with the palace of its residents taking only a small portion, leaving much of it as a forest-like terrain.

In the center of the island is its sacred peach tree, which its residents seem to take pride in. For every woman that its residents abduct, they leave behind a single peach; and even Prince Toma's illusory barrier is the appearance of a peach.

Also notably, the tree has a carving of a coat of arms on it, though where this is located is unknown, since it only shows up in the second movie's credits.

Togenkyo Spring
The sap from Togenkyo's sacred peach tree creates a magical spring that will turn anything that touches its waters into a man. It is also said to protect the island from danger.

Due to the island's water, every child born on it is male, and thus the island lacks any women except the ones its inhabitants abduct for marriage from neighboring islands.

In the Movie
Ranma and company first encounter Togenkyo when it drifts near the deserted South Seas island they are marooned on, and all the females in the group, including the Tendo sisters, Shampoo and Ukyo, are kidnapped. Using a lifeboat from Kuno's wrecked yacht, the rest of the group crosses over to Togenkyo in a rescue attempt. After Ranma defeats Toma, they stay on Togenkyo for another week, as it floats on the ocean currents towards Japan.