Teeny tiny adventure

I'm ready to go back to the Art Institute of Chicago before after reading The Sixty-Eight Rooms by Marianne Malone.  Ruthie and Jack are on a field trip to the Art Institute when they see the exhibit called the Thorne Rooms - 68 miniature rooms that show different times in U.S. and European history.  They discover a magical key that can shrink them down to a height of five inches, just the right size for exploring the rooms.  They're surprised to find out that they aren't the first people to do this, and they're even more shocked to discover that they can actually enter the periods of time that the rooms represent.  Details of the rooms are fascinating, and it's fun to read how Ruthie and Jack solve problems that come up when they're so small.  Fans of Chasing Vermeer or From the Mixed-Up Files of Mrs. Basil E. Frankweiler will appreciate this teeny tiny adventure.