On our second day in Florence we climbed to the top of the Basilica di Santa Maria del Fiore. Over 300 meters high with over 400 steps this was a huge trek for our jet lagged bodies. We woke up fairly early and started the climb around 9am so thankfully it wasn't crowded or too hot. If you want to do the same climb I'd highly recommend it but make sure you go early in the day, otherwise the lineups are just insane. The Basilica di Santa Maria del Fiore was built in the 15th century, with the dome being created by Brunelleschi who used Roman techniques to create it.
On the way to the top you get some amazing views of the frescos at the top of church. These were created by Vasari in the 16th century and depict typical scenes found in many churches: heaven and hell. Honestly in Florence you will be INUNDATED with beautiful artwork and it all begins to blur together. It is totally ok if you don't remember all of it, try to pick out your favorite pieces and hold onto those.
I don't look back on my time in Florence and remember all the partying we did. Don't get me wrong, it was a lot of fun and we met some great people. Instead it's things like climbing up to the top of
the duomo that stand out in my memory.