From Bulbapedia, the community-driven Pokémon encyclopedia.
The Space-Time Tower (Japanese: 時空の塔 Space-Time Tower) is an anime-exclusive building located in Alamos, Sinnoh. It first appeared in A Secret Sphere of Influence (albeit as a diorama in the Eterna Historical Museum), and then had a major role in The Rise of Darkrai. Besides being a building, it is the largest musical instrument of the Pokémon world.
Within the Space Tower are large spheres rotating on orbits. Within the Time Tower are large pendulums. Outside in between the two towers is a long and thin winding staircase, leading up to the top of the tower. On the topmost floor lies a large machine that plays music by inserting special disks into a place-holder and pulling a lever. This is a similar function as a piano, but the strings are aligned in a cylinder.
The Space-Time Tower was vital for the safety of Alamos Town during the events of The Rise of Darkrai. The song, Oración, able to calm the fiercest rage, when played, soothes Dialga and Palkia, overall saving Alamos from destruction. It also serves as a Contest Hall, attracting many Coordinators who wish to compete in the Alamos Town Pokémon Contest.
The towers later appeared in flashbacks in both Giratina and the Sky Warrior and Arceus and the Jewel of Life. They also briefly appeared in I Choose You!, which is set in a timeline different from the main series.
Inside the Space-Time Tower
- The Space-Time Tower is based on the Sagrada Família, a Roman Catholic cathedral designed by Antoni Gaudí in Barcelona, Spain.
- On top of Space Tower are round sculptures, which corresponds to Palkia's pearls, while on top of Time Tower the sculptures are angular, which corresponds to Dialga's diamond.
- On the wall that features Alicia in the center of the Space-Time Tower, there are many Pokémon and their counterparts on the opposite side of Alicia. They are: Solrock and Lunatone, Dustox and Beautifly, Gallade and Gardevoir, Volbeat and Illumise, Zangoose and Seviper, Electivire and Magmortar, Plusle and Minun, Wormadam and Mothim, Leafeon and Glaceon, and the two variants of Gastrodon.