It’s 34 degrees Celsius, the sun is shining, and people (including myself) are walking around with a gelato in hand. Is this a scene from London or Rome?   Both! Let me explain… The 29th of June was the hottest day of the year (up till then) in the former; it was also when the Gelato Festival came to town. A week later, I visited the latter, where the temperature routinely rises to (and above) the mid-thirties during the summer. And, of course, gelato is there all year long.     This week, however, I am going to focus on the Eternal City, as Rome is also known as. If…