This isn't much of a tourist destination for sights. The old town is nice to look around. There is a large man made lake called Malta, designed mainly for kayaking. The university also has a nice garden with many varities of plants all carefully labelled.
Warsaw felt like a big city. People rushing around with many of them trying to look distinctively fashionable.
I found didn't find much of interest here. Lazienska Park is nice for a stroll. The castles were a bit dull after recently being in Berlin.
Krakow emerged pretty much unscatched from World War bombing and hence has an abundance of old architecture to lure many travellers. This also means that there are a lot more English speaking people here, as tourism is quite strong.
Leaving Krakow you have limited options. A stop in Zakopane in the mountains is apparently well worth your time. A train to Prague will take about 8 hours, so a sleeper train is a popular option. However, it is cheaper if you get a train near the Polish border, walk over and then catch a train in Czech.
When I first looked around Rome, I was a bit disappointed. I had such high expectations. I had to look twice when I saw the Coleseum at the end of some normal looking street. I was expecting it to have a bit more of its own space. I think I came upon it from the worst direction though.
A lot of the ruins are... well, really ruined.
The Monument to the Unknown soldier was quite visually impressive.
By the time I hit the Spanish Steps I was really getting into it. Alas, though, it was time to make my way back to the train station for my flight to Stuttgart.
For a city that has a reputation for all roads leading to it...
Florence is kind of spoiled by its own popularity. Tourists are everywhere and you may have to wait several hours to get into the main attractions. People pour in by the bus load and walking around the city can be somewhat painful.
I went and saw the replica of David in ***, as I was not sure at that point where I could handle standing in line for a couple of hours. I eventually did stand in line for about 1.5 hours and seeing the original David was worth it to me. It was much cleaner and with the lighting it seemed much more impressive than either of the replicas I saw.
Personally, one of my favourite parts was the view from Michelanglo's Piazza at night. This was totally unexpected and very cool. The main attractions are all lit up and very visible. There is also another copy of David here.