Here's my town in a kinda blueprint-y effect layout. It's home to 32,000 people who are extremely overeducated for their jobs because of very low demand for offices. I used many traffic circles, and have learned more about them, including their limitations. That really ugly looking interchange area in the East is a remnant of a traffic circle gone supernova that turned into something of a High Five. There is almost no traffic in the city. My former city managed to hit 50,000 people but there was absolutely nothing but standard road sizes and traffic from hell that literally never moved. I am very proud of this one.
I have a dam and 2 solar plants. I had originally tried to put a dam on the southern river from "Lake Leed" but I think I placed it directly ontop of a water spawner because the water for some reason created an insane current over the dam in the wrong direction. When I removed it, water went 50 stories in the air and tsunami-ed over my town. I try and add trees especially among major roads, and some of them are quite pretty. About 2,000 of my cims take my convoluted-over-time metro system and the only intercity connections other than the road I have is a standard cargo station which you can spot easily along one of my overbuilt highway spurs.
I look forward to it growing and I am proud it managed to survive without major problems the shift to high-density business and residential.