The exterior of the Ruins of Hope consists of a stony slope, with occasional patches of coral littered around due to the area's close proximity with the ocean. Like the other ruins of Alola, the interior houses a walkway, which requires Machamp's help to get through due to the big stone blocks blocking it, and an altar dedicated to Tapu Fini at the innermost part.
The ruins made their first major appearance in Showdown on Poni Island!, where Hapu was seen there, praying for Tapu Fini for the chance to speak with her grandfather Sofu in order to learn how she could become an island kahuna. She failed to get any response, and left the ruins before the tide flooded them.
In Run, Heroes, Run!, Ash and Kiawe arrived at the ruins in the hopes of finding and battling Tapu Fini. Unable to find Tapu Fini, Ash and Kiawe started to battle each other in the hopes of making it appear. However, the battle ended up damaging the surrounding area, angering Tapu Fini, who trapped Ash, Pikachu, Turtonator, and Marowak in a veil of water. As a result, Kiawe had to travel to Akala Island to get some scales from Tapu Lele within a certain time limit. Kiawe narrowly succeeded in the given task, which was revealed to have been a trial, and Tapu Fini gave Kiawe a Flyinium Z as a reward for the completion.
In Memories in the Mist!, Hapu traveled to the ruins to ask Tapu Fini to release Ash, Lillie, and Mallow from its mist. When Tapu Fini just seemed to dance around in response, Hapu sent out her Golurk and had it attack Tapu Fini with Flash Cannon. Sofu's ghost then appeared to Hapu and told her that her will to save her friends had moved Tapu Fini's heart so much that it had chosen to accept her as the new Poni Island kahuna. Tapu Fini then freed Ash, Lillie, Gladion, and Mallow from its mist.
In A Grand Debut!, Ash and his classmates attended a ritual at the ruins. There, Tapu Fini formally granted Hapu the title of Poni Island kahuna.
In the anime, the entrance to the ruins is connected to the ocean, causing it to get flooded during high tides. The interiors of the ruins are not affected by the tides, however.
The Ruins of Hope during high tide in the anime
The Ruins of Hope interior in the anime
This is the only one of Alola's ruins whose name is changed to a different meaning from Japanese to English.