If you we're visiting Italy, I think it would be a good idea to visit Pompeii while you're there. Pompeii is famous because it was buried in burning hot ash from a nearby volcano. Many of the people that lived there were encased in the flow and died. The eruption happend about 50 AD, close to the time Jesus walked the Earth. The amazing thing about Pompeii is the bodies rotted away but they left an imprint of their last moments alive. Some people became aware that the hollow spaces around the buried bones was an inprint of the body, they poured plaster into the hollow spaces and were shocked to find all the person's features were preserved; you could even even see the expression on their faces and what type of fabric their clothes were made of.
Another thing that would be amazing is if an alien civilization exists but they never had their equivalent to Nicola Tesla, the guy that invented AC electricity transmission. Such a civilisation would have electricity but only direct current, they may even have more technology advances than us but somehow missed the concept of Ac. In AC power the current changes direction many times a second and this allows a transformer to divide the power up into smaller currents without much waste or heat. One side of a transformer has a electro magnet and the pulsating current causes the magnetic field to wobble and that causes a the smaller coil to get a current.
I wonder what Nicola Tesla would think of his country Yugoslavia breaking up into smaller countries in the '90s. He would be turning in his grave; they buried him with his wires and magnets 😂. Yugoslavia fragmented into Kosovo, Bosnia, Serbia and a few others. I was a kid in the '90s but I get it, the Nations didn't want to share a state they wanted to govern themselves.
