Yoyogi Park (代々木公園) 代々木公園
54 hectares on the former 1964 Olympic Village, hanami among the cherry trees.
The National Gymnasium, where the other half of the sequence takes place, is about 500 m away: in the film the two places seem to be right next to each other, but on the ground they are not.
Tokyo
Yoyogi-Hachiman, Meiji-jingumae 'Harajuku'
Sword Art Online
The second event battle of ‘Ordinal Scale’ and, the next morning, Kirito's first encounter with the hooded ‘ghost’. The identified spots are all inside the park: the viewpoint walkway, where the ghost appears; the grand staircase; the open space in front of the open-air stage, which is the battle arena, with the clock also drawn in the anime; the Parks Yoyogi No. 1 kiosk where Kirito and Asuna sit down to talk; and the rose garden, shown in a single still.