Thought I'd give a run down on the remaining Architect Tests which require an obscene amount of high grade materials and/or assistance which means the chances of me getting them done are pretty slim. The highest level test is called the Test of Seven Phoenix which is not only pricey to build, you must get OTHERS to build it for you! Worst of all, you won't know -where- or -which- of the seven phoenixes (all with different build requirements) you need to construct until the hour to build them. Fast traveling during this hour negates all your efforts.
In the Test of the Megalopolis you are required to build a huge structure which is actually composed of 49 construction sites which you are supposed to allocate other people to. Once begun you have one week to complete -all- of it. It's only thanks to Balthazarr that I managed to pass this!
Management skills to the max.
The Throne of Pharaoh is a new test that came out a few weeks after I joined the game. It's actually composed of two parts: first build a plinth (which in this case is a bloody huge fortress) followed by building the chair to go on top of it. Up to seven people then need to decorate the chair and each of them get a different build requirement when signing up. They then have three hours to finish and apply their part or they fail.
Pharaoh must have a big butt.