Garlic Jr.'s fortress was first seen in the movie Dragon Ball Z: Dead Zone. Inside the fortress, there is a garden, a fruit tree, a cuckoo clock and a storey with a balcony.
Nicky was in charge of doing baby sitting for Gohan when the child ate a fruit from the fruit tree and became euphoric. Goku fought Ginger and Nicky at the entrance room, while Piccolo fought Sansho on a higher story. Kami fought Garlic Jr. in the garden; it was also in the garden where Garlic Jr. opened the Dead Zone.
The ruined Garlic Jr.'s fortress is later seen in the first episode of the Garlic Jr. Saga, "The Heavens Tremble", when Garlic Jr. escapes from the Dead Zone and comes back to Earth with the Spice Boys.