That is the view from The Floating Garden Observatory. The most nearest buildings are: (from left to right)
Acty Nishi Building (with a big, blue "P"), Hearton Hotel Nishi Umeda, Daiwa House Industry Company, Limited, Hotel Monterey, Osaka and Osaka Central Hospital.
The building with wordings "清酒日本盛" on the roof is Daiko Building.
The white and tall building behind Daiko Building is HERBIS ENT, the right one is Breeze Tower. The height is 174.9m.
Its construction was completed in July 2008 and it is the newest building in this zone. The tallest one is HERBIS OSAKA. It is a hotel.