There is a museum on the Warners Lot that has a museum in it. On the first floor there are props and costumes from WB TV shows and some movies. There are many different shows on display down here. There is a staircase leading to the second level. On the staircase is a street sign that reads "Privit Drive". An owl sits on top of the sign.
Upstairs is the Harry Potter Display. It takes up the entire floor. They have things like the Dursley's Fireplace with all the invitations coming out of it, fastened in place to look like the are flying out. There are costumes from Harry (regular clothes and Quiditch Uniform), Ron, Hermonie, Mr. & Mrs. Weasley, Voldemort, Hagrid, Lockheart, Lupin, Dumbldore, Lucius Malfoy and Quirrel. Harry's Cupboard under the stairs that you can look into. Hermonie's wax figure used to show her as frozen by the Basilisk, lying in the Hospital Bed, so lifelike you expect her to wake up and move.
A Dementor Maquette hanging from the ceiling. A glass case with the Marauders Map inside. The Time Turner in another case. Harry's wand and other small things in other cases. All the candy in the correct containers and all the bottled drinks you can imagine. Signs, and so much more.
I wish they would have allowed pictures, but you can't touch or take pictures. In the middle of the room is the sorting stool and on top is the sorting hat. If you ask, they will remove the hat, have you sit on the stool and then place the hat over your head. It will immediately begin to talk and "sort" you into a house. I got Slytherin right off the bat. I guess my dark side was showing that day. You cannot retake the sorting ritual as that is not fair.
The museum is not open to the public, only to WB employees, their family and friends. A new employee where I work is a big HP fan, found out I was too and asked his wife, who works at WB is she could get me in. She did while I was on vacation last week. It was a most magical experience.
These are all the actual costumes and props used in all four movies. There is some wonderful stuff on display. Sirius Black's Black Dog is huge. Also the Weasley Clock from the Burrow is there. I know there are things I can't remember, there is so much on display. I wish I could have taken pictures to show you all. It was so cool.