On Broadway, on Saturday mornings you can see Wicked: Behind the Emerald Curtain Tour. This info is from broadway dot com.
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Wicked: Behind the Emerald Curtain Tour
Get a special sneak peek inside the wonderful world of Wicked Saturday mornings at 10AM.
Now a magical journey awaits you behind the emerald curtain at Broadway's smash hit musical, Wicked. Perfect for groups and individuals, participants visit the exclusive "Behind the Emerald Curtain" Museum, which includes an elaborate set model by Tony Award-winner Eugene Lee and an up-close look at some of Tony Award-winner Susan Hilferty's costumes (with beautiful details that are not always visible from the audience), as well as some of the actual props and wigs from the show.
First you get a tour of the museum guided by cast members. Then watch a special backstage video from your front-row seat inside the grand Gershwin Theatre and have the opportunity to ask the guides everything you always wanted to know about Broadway. It's the ultimate insider experience!
Special note: Tickets to the Broadway show are not required for entry into the tour
The link to above for more info is
http://www.broadway.com/gen/show.aspx?SI=518949