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'Ichino-mi-ya' can be read as the number '138', and so the number crops up regularly in the local area. Ichinomiya Twin Arch 138 is the tallest arch-style tower in Asia, at (you guessed it) 138 m tall. An observation platform at 100 m (admission ¥500 for adults) gives a panoramic view of the Kiso Valley. One sight of note is the nearby village which is constructed entirely on an island in the middle of the Kiso River. The tower is surrounded by parkland, which is especially pleasant during cherry-blossom season. The park is easily accessible by bus from Ichinomiya station.