The Temple Institute is in Jerusalem where they have been designing and planning the third temple for when the time is ripe to rebuild it. They have all the artifacts, except the ark of the covenant of which they believe they know where it is, to refurbish the temple. They give the best and fullest explanation of the Temple and all that went along with it. The website is worthy of long perusal and support for their labor is encouraged by Free the Church. I went through their entire "Illustrated Tour of the Temple" which is provided in a somewhat complicated HTML format. For my own sake I copied the text and illustrations and compiled into a ebook format which I find easier to read. This copy is 14 MB and can be downloaded here:

Illustrated Tour of the Temple