PaperToys.com offers paper structures (to cut out and assemble) of several world landmarks. These structures may be used alongside your history program.
For example, below is a screenshot of Shakespeare's Globe Theatre (clicking on the photo takes you directly to that drawing):
Or how about the Taj Mahal? (clicking on the photo below takes you directly to that drawing)
To view the full list of structures, which includes The White House, Neuschwanstein Castle, Sydney Opera House, Wrigley Field, Big Ben, and the Statue of Liberty among many others, go to PaperToys.com. There are structures simple enough for Kindergartners and structures that will even challenge high schoolers (or you!).