Below is the link to where I purchased the cutting file for my 3d Eiffel Tower model. It is from the Silhouette Design Store, and was designed by Jennifer Wambach.
The final measurement is about 7x4.5 inches and is best cut on thick cardstock. I cut my on Black Onyx Stardust cardstock which was 285gsm, using the 'Coverstock' option on my Silhouette Cameo.
Good luck and happy crafting!