Buongiorno
If you have time - I would suggest these for Rome
- Take the Metro to the Colosseum at night. Seeing it lit up is beautiful. It's a memory that will last forever.
- If you're into "Angels & Demons" - go see the Santa Maria Della Vittoria church to see Bernini's "Ectasy of St. Teresa" - one of the most beautiful sculptures I've ever seen.
- Not for the sqeamish - The Capuchin Crypt. The entire crypt's "artwork" is made from the skulls & bones of Capucine Monks
When in Venice -
- Get a Vaporetto pass - take the #1 line ( if memory serves
) and take the ride around the entire island and thru the Grand Canal. Do it twice - during the day & especially at night
Take the Vaporetto as often as you want with a pass.
Get LOST - it's magical
Go to the out islands: On Burano - have lunch at Gato Negro - they make a risotto that is to die for. Buy some handmade lace - pricey
On Murano - visit the glass makers. They are among the best glass makers in the world.
Go to the top of the Campanile in San Marco Square - they have an elevator
The 360 degree views of the City are amazing
Climb the stairs to the top of the clock tower in the square
Take a tour at the Doge's Palace and cross over the Bridge of Sighs
I could go on and on and on - these are just the things that just popped into my mind first
Ciao