Lab (Luigi's Mansion 3)
From the Super Mario Wiki
The lab is Professor E. Gadd's headquarters in Luigi's Mansion 3. It is a small laboratory that can be compressed to a portable size. E. Gadd sets it up in the garage of The Last Resort after Luigi rescues him and captures the Steward. Its interior and exterior heavily resemble those of the Bunker from Luigi's Mansion: Dark Moon. While in the lab, Luigi has access to all of the features of the Virtual Boo, such as talking to E. Gadd, changing settings, and viewing a map of the hotel. Additionally, Luigi can view the ghosts and gems he has collected and access the ScareScraper and ScreamPark.
After obtaining the fourth floor's elevator button from the Mezzanine and returning it to the elevator, E. Gadd introduces the Shopping Network, which allows Luigi to buy Gold Bones, Boo Finders, and Gem Finders for 1000G apiece. He also gives the Luigi the ability to warp to the lab from anywhere in the hotel instead of having to travel back to the garage. However, he cannot do this if he is escorting a Toad or there are ghosts after him.
At the end of the game, the lab is attacked by King Boo, who uses his crown's power to carry it to the roof of the hotel. He then destroys the lab and traps E. Gadd and all of the Toads in a painting.