Once you have taken the Underground Tour, you can apply for the job at the museum.
When you leave (that night), you re-enter the museum through the secret hatch into the Supply Room, which opens from the Underground.
(see related question)
When you get the message on Counterfeit island, travel to Early Poptropica in the blimp and go to the Pop Art Museum. The curator from the Museum Fantastique is at the lower left inside.
The art museum on counterfeit island opens after you go to the guy at the dock.
you click on the museum door then you talk to the guard and say you are interested in applying for the job and then you can go inside the museum
All you do is enter the Pop Art Museum and meet the curator at the bottom left inside. Then you go back to Counterfeit island to finish the quest.
The Museum Fantastique is on Main Street, just left of the park where the blimp arrives on Counterfeit Island.
She is the curator of Museum Fantastique and she is in the Pop Art museum. Go to the lower left inside. (Note that she is only there where you travel to Early Poptropica as part of the quest on Counterfeit island.)
meet the man near the exit of the cave and the ladder inside will get acess to the supply room in the museum
You go next to the museum and go to the balloon and leave.
after you get a job at the museum
In the museum.
it is on the top level in the middle of the museum.
Talk to the curator as you exit inside the Web Browser Cafe. Return to the Museum to receive the Island Medallion and discover the secret of the Museum Fantastique.