If this is on Sharktooth, then you have to jump on top of the temple and find a paper. Go into the temple, go to the door, and you'll use the paper.
If you are talking about the minotour door, then you play the tune on your Flute. I haven't played poptropica in forever so I can't remember where you get the music piece.
go on top of the temple and get the paper then go to the door and spell open with the symbols on the piece of paper then the door should open
You use the decoder the girl gave you and match up the symbols
You find the symbols on the roof of the ancient ruins. and just press them in order to make OPEN.
you open the door of the ship in poptrpoica
go to the castle or whatever and open the door
go to the castle or whatever and open the door
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To open the door to the basement on Haunted House in Poptropica, you first must get the key which the bat is flying around with. Then use it to unlock the padlock and onpen the door!
you do nothing
On Poptropica's Shark Tooth Island, the letters BOQNSPE are letter equivalents to the ancient symbols on the face door in the ruins.You have to press the 4 teeth that spell "open"(then the nose) to unlock the door. The translation page is on top of the ruins, and you can get it by climbing the vine and jumping left from the platform.
There are doors to open on almost every island on Poptropica. Specify an island name and you may find an answer.
I don't remember the symbols to it, but the symbols should spell out OPEN i believe.