You go in by the tunnel.
when it's night, hang on the light above it.
You use the underground railroad starting from by the docks because they are doing construction in front of the entrance of the museum the go up the rope thing and you will be in the supply closet in the museum.
it is at the museum on the top of the museum at..night.
through the back entrance to the tour tunnel and go up the ladder and solve the puzzle using all of the paper scraps.
The Van Gogh painting "Starry Night" is on display at the Museum Fantastique, but also at the Pop Art Museum on Early Poptropica island. One or both are copies, but that does not affect the game play on Counterfeit Island. The artist Vincent van Gogh (1853-1890) is there at the Pop Art museum (probably an actor).
When you complete the scooter chase on Counterfeit Island, pick up the Key Card and go back to the museum. Open the package and run the scanner across the copy of the Starry Night painting. There is a message to go to Early Poptropica.
Counterfeit Island
Go through the underground tunnels.
After chasing the thief (and getting the key card), return to the museum and get the package. Scan the Starry Night painting and meet the lady curator on Early Poptropica. She will give you the key.
You actually leave and travel in the blimp to the Pop Art Museum on Early Poptropica.The x-ray wand shows a message written on the copy of The Starry Night, which says to meet the Museum Curator on Early Poptropica island.
At night get in to the museum and go to the top painting and get on the light and that is the painting to get you past.
the other night guard is in bobos clown shop