Ravenclaw's common room is in a tower like Gryffindor's is..
In the ootp game there is only Gryffindor's room
Common sense is not common - Voltaire
The most common Pokemon is Pikachu.
Trilobites are common fossils throughout the Paleozoic.
That depends on where you are located. In the united States, they are referred to as 'ties'; in the United Kingdom, I believe they are called 'sleepers'. They can also be Concrete or Steel, but wood is the Most common in the US. The are actually Thick beams and not planks, as they distribute that weight and hold the Rails parallel.
Water is the most common. Ghost is Least common. UPDATE: As of generation V, Dragon is now the least, Ice is second least and Ghost is third.
just ask them
One of the champions is in the Gryffindor common room, one in the library and one in the great hall. You have to beat the one in the common room first and then the Slytherin one in the great hall to get to the Ravenclaw one in the library.
In Harry Potter, Book 6 it mentions that the Hufflepuff is down by the kitchens.
The Gryffindor champion is in the Gryffindor common room by the notice board. The Ravenclaw champion is in the library at the table. The Slytherin champion is is the Great Hall near the table where Dumbledore's chair is.
Yes he found it at the end of the last book, it was in the ravenclaw common room.
It isn't accessible in Order of the Phoenix.
Yes, Cho Chang did try and take Harry to the Ravenclaw common room to look for the Lost Diadem in Harry Potter and the Deathly Hallows however Ginny was unhappy about this and suggested that Luna Lovegood took him.
The Gryffindor common room.
don't konw
Ginny is in the Gryffindor common room.
I guess there are times when nobody is there.
you get missions and the invisibility cloak