台場 is read as だいば (daiba) and means fort.
だいば
daiba
おだいば
Odaiba (artificial island in Tokyo Bay)
だい
counter for machines and vehicles
たいふう
typhoon
だいほん
script
だいち
plateau
だいしゃ
truck
だいし
backing paper (for a photo, painting, etc.)
こうじょう
factory
うんどうじょう
sports ground
たちば
position
かいじょう
assembly hall
しゅつじょう
appearance (on the stage, television, etc.)