Osaka Prefectural Government Sakishima Building
大阪府咲洲庁舎
General information
Status	Completed
Type	Mixed-use
Location	Osaka, Japan
Coordinates	34°38′18″N 135°24′54″E / 34.63833°N 135.41500°E / 34.63833; 135.41500
Completed	1995
Height
Architectural	256 m (840 ft)
Technical details
Floor count	55 above ground 3 below ground
Lifts/elevators	32 (12 by Toshiba Elevator・Hitachi, 6 by Mitsubishi Electric, 2 by Otis)

The Osaka Prefectural Government Sakishima Building (大阪府咲洲庁舎, Ōsaka fu Sakishima chōsha) or Cosmo Tower (コスモタワー, Kosumo Tawā) is the second tallest building in Osaka and the third tallest building in Japan. Until 2010, it was known as Osaka World Trade Center Building (大阪ワールドトレードセンタービルディング, Ōsaka Wārudo Torēdo Sentā Birudingu) or WTC Cosmo Tower (WTCコスモタワー, Daburyūtīshī Kosumo Tawā). It is located in Nanko Cosmo Square, near the Osaka harbor, in Suminoe-ku.

The skyscraper rises 256 m (840 ft), the same height as the Rinku Gate Tower Building in Izumisano. It contains three basement floors, a museum, restaurants, office space, a conference room, a skylobby and an observation deck, which is located in an inverted pyramid at the top of the structure. The building houses the working office for the governor of Osaka Prefecture.

• List of tallest structures in Osaka Prefecture
• List of tallest structures in Japan

• "WTC Cosmo Tower". Osaka Visitor's Guide. Archived from the original on August 30, 2005. Retrieved October 30, 2005.
• Kuniko, Sanada. "New Developments in Osaka". Osaka on the Go. Archived from the original on November 10, 2005. Retrieved October 30, 2005.

• Official website (in Japanese)
• IBPC Osaka