The Tower Osaka, Skyscraper in Fukushima-ku, Japan.

The Tower Osaka is a high-rise apartment building at Hotarumachi, 1-1 Fukushima, Fukushima-ku, Osaka, and the tallest building in Fukushima ward. Under the Building Standards Act it is listed as one basement floor and 49 floors above ground, because the artificial ground level aligned with the Dojima River super-levee is counted as the first floor; the street on its north side lies at basement level, so real-estate advertisements sometimes call it a 50-floor building. Floors 4 to 7 hold rental apartments and floors 8 to 49 condominiums, while the first floor and basement contain the Dojima Crosswalk commercial facilities, including restaurants. An STL transmitter for Asahi Broadcasting stands on the roof, with an antenna aimed at Mount Ikoma.

The Tower Osaka was completed in Hotarumachi, a redevelopment zone of Fukushima-ku, and became the tallest building in the ward. It stands on an artificial ground level aligned with the Dojima River super-levee, so the road on its north side sits at basement level; legally the building is 49 floors above ground, though real-estate listings often call it 50. Takenaka Corporation is credited as builder.

The building embodies the Japanese approach to vertical living, where offices, shops, and apartments bring together different users under one roof. This mixed-use design shapes daily life in the district and shows how contemporary Japanese cities operate.

The building sits in Fukushima-ku with good connections to several subway stations that link quickly to other parts of Osaka. Visitors can easily explore the area on foot and find shops and restaurants around the tower.

The roof holds Asahi Broadcasting's STL transmitter, with an antenna aimed at Mount Ikoma, where the station's transmitting site is. Under the Building Standards Act the tower is listed as 49 floors above ground and one below, because the ground level of the artificial deck aligned with the Dojima River super-levee is counted as the first floor; the road on the north side is at basement level, so real-estate ads sometimes call it a 50-storey building.