TresIsla

TresIsla is the 11th stage station planet on the Galaxy Highway, known also under the name Mishima. It’s known for its local tourist spot TresIsla’s Sky Walk – a long suspension bridge from which one can see both the ocean and the mountains. There is an accompanying zip slide which goes at high speeds, as well as a child ride and a picnic space for the tourists.
According to an application which suggests suitable stage stations depending on one’s personality, TresIsla is recommended to those who are careless and hasty.
This planet was not visited, but mentioned in drama CD 3.

Trivia

TresIsla is named after Mishima, which was also a station of the original Tōkaidō and is nowadays known for its Skywalk bridge. Mishima is written with characters for three and island - the two words translated to Spanish turn into TresIsla.