Rabbi Menachem Leibtag on the Mishkan For in-depth shiurim on the parshiot of the mishkan, including the structure of the parshiot, see the shiurim at this location. This site has an explanation of the meaning behind each of the bigdei kehuna. By Elana Hefter You might need to download a VRML viewer to see this. The VRML offers 3D, and enables you to walk through the Mishkan. Links to the viewer download site are on the home page.
Site includes explanations in English.
You might need to download a VRML viewer, for the VPY you'll probably need a VPY viewer. I only checked out the VRML and pictures of the model. If you view the VPY version, let me know how it works out. This site has some interesting aspects. This last link offers views from different angles of the Mikdash from a model created by Catriel Sugarman.