I would like to travel around the world in 30 days. Tell me what you think? Share your experiences!?

If you are going to do this all in 30 days and plan to spend 12 of those days in Paris and Germany (plus travel time between a lot of these countries will wipe out another 3-4 days), you will only have about 15 days to see all of the other places. Being a very frequent world traveler, I suggest just choosing one or two of these places - you'll barely see any of one country in 15 days, much less 6 of them - ESPECIALLY if you are travelling overland (I've travelled from Istanbul to Prague via Bulgaria, Romania, Hungary and Austria and it took 5 weeks and I felt I barely got a feel for any of the places!). Plus, some of the countries you list are extremely difficult to get visas for (specifically Turkmenistan, Uzbekistan and Iran). If I were you, I'd ume at least 5-7 days per country, and go from there. You'll get a lot more out of it. Good luck!