The famous ucityguides.com made this ranking...

I tottaly agree with this top 10 (specially because of Paris, Lisbon, Prague and Florence) but I wonder where is Barcelona...

1. Venice
2. Paris
3. Prague
4. Lisbon
5. Rio de Janeiro
6. Amsterdam
7. Florence
8. Rome
9. Budapest
10. Bruges

Source: http://www.ucityguides.com/cities/to...ul-cities.html

Italy slays

North America shunned

Not a single North American or Asian city

Somehow I don't think that one out of six continents on Earth contains 90% of its most beautiful cities.

6. Amsterdam

No Sydney.

If any city I would be here for on the list, it would be Rome due to it's history.

Other than that, this list is invalid.

Paris is beautiful.

I swear I'm going to Paris before I die. I just have to. That's like my dream city.

FAVELA IN RDJ also look beautiful rite.

Paris

Never went to Rome but I am pretty sure it's better than Lisbon.

Italy too bad I live in a ****** city

Anyway, Florence>>>>>>>>Venice>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>Rome imho

No... I've been in Rome... and Lisbon is much brighter, warm and seductive than Rome... ...
Florence is AMAZING!!

Paris, Lisbon and Florence are in my heart!

Paris, prague and florence are BORING!!!!!!!! Pretty places I have to admit but a lot of old people and tourists.
This summer I went to Spain & Germany and are also beautiful places with beautiful people!!! and with so much fun :P ... It must have a balance... in my personal opinion.

I see what you mean...

You must go to Lisbon, then... You will love it! Trust me!