I lived in Siena for four months and studied Sienese and Italian history. This cathedral is a rich piece of history and architecture. Its a fully functioning cathedral with the grand walls of a newer cathedral built around it (the Sienese wanted it to be the biggest cathedral in Italy...before everyone died from the Black Plague and couldn't finish it) You do have to pay small fees for different parts of the building, but the main part of the cathedral is free to enter. Defintely a must see!

Tip 1: Once again, i have to say...if you are in Italy, you have to work in an Italian way which is....follow what the Italians feel like doing on that day! We went there and realised that the cathedral is free to enter BUT you canno enter until you go to the nearby booth to get an entrance ticket (which cost zero euros, zero franc, zero pound, zero krone, if you get what i mean? Literally $0.00. Free!). We are not sure why we need to get a ticket even if the entrance is free. And most of off, when we were queueing up at the booth, the lady behind the counter was trying to sell us a 2 euros ticket to see the cathedral library in the cathedral! We didnt want to and she showed us a very unhappy face like as if we were some cheapskate uni students.

Tip 2: We entered the cathedral and was not dissapointed. It was magnificient. Even the tiles on the floor were depicted in a very medieval old age era.

Tip 3: We pastby the library and had a peek in there. It was just some library that filled with manuscripts and we couldnt even be bothered looking further.

Tip 4: One good thing about this cathedral? There is a rest area where you can get cheap hot yummy chocolate from the vending machines and then go for a toilet break. You might need to pay some sort of toilet fee like 50 euro cents but we walked in without paying. Teehee!

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Wow! After seeing St. Peters for the first time, I thought that any church after it would be just okay. This is a must. We only purchased tickets for the Duomo and Baptistery, and it was enough for me.

I have been to the Duomo's in Rome, Milan, and Florence, I agree with many that this one is the most grand. I is a sight to see.