I was at the Baikonur Cosmodrome in Kazakhstan to watch the Soyuz TMA-20 launch.  It was spectacular.  I strongly recommend it.  (Tour Logistics.)  (More Baikonur photos.)

I found myself in a tour group of six: our guide told us we were all the tourists visiting the launch. There were also some press, and various Roscosmos/ESA/NASA guests, but it looked like there were still well under 200 observers in total. So it was a much more intimate event than a shuttle launch at Kennedy.

Before the launch we got to see lots of cool toys from the Soviet space program, including a lot of the machinery for the Energia/Buran shuttle. This included sitting in the pilot seats of a full-scale Buran mock-up, clambering over a giant Buran transporter vehicle and then waking around a launch pad. The transporter and launch pad felt like relics from some alien civilization: enormous, exotic, and standing mysteriously abandoned.

Our hosts still suffered from a little Cold War competitive spirit: we were vigorously assured that the N1 rocket was the most powerful launcher ever, and that Buran was much larger/better than the shuttle. (This is not quite how Western sources see it!)

They let our little group into the Soyuz assembly building, so we got to see some Soyuz boosters and then a complete Soyuz launch vehicle up close. A lady guard wagged an indulgent finger when I dared to reach over and touch an engine.
The TMA-20 launch itself was striking. On the pad, the Soyuz sits slightly below ground level, with about half of the first stage boosters below ground. So we couldn’t directly see the initial ignition, just a sudden out-pour of smoke and spreading fire across to one side, which for a fraction of a second made me fear an accident, but no, the craft started to rise and then abruptly there was an intensely bright flame, presumably as we could now see the engines directly for the first time, a dazzling bright fireball, rising very quickly into the sky. Then a few second later a very loud rumbling sound arrived. After we first saw the engines, I never saw the craft itself – the engines were far, far too bright.
It was spectacular. Much more striking than the STS-129 shuttle launch I saw, probably both because we were so much closer (0.9 miles versus 6 miles) and because this was a night launch.
They let us visit close to the launch pad (which was the original Gagarin pad!) about an hour after the launch. So we could see the re-assembled launch gantries and the launch pad itself up close. But they wouldn’t let us into the flame pit, so we couldn’t actually feel the residual launch heat. Drat.

If you are a space buff, I highly recommend this tour.  I’ve posted a page on Baikonur Logistics to provide more information on entry formalities, flights, tour companies, etc.