Here is an old British toy that had a lot of good intentions, but also some unanticipated drawbacks.
Buildings were constructed on allegedly waterproof waxed card bases. The bricks etc. were stuck together with a mortar made from a mixture of flour and chalk powder. It required a great amount of skill to erect buildings accurately, very time-consuming and beyond the patience of most of the children it was aimed at (8 to 14 years). Especially so in cold houses (as most British homes then were) it would take several days for the building to 'set'. Reusing the components involved a process of dunking the entire model in a large bowl of warm water. After the model fell apart the bricks and plaster pieces required lengthy rinsing to remove all organic traces to prevent mould growing on them.
I wonder how well they sold in the USA, as touted in the ad below, from Boys Life for September 1948.
Palmitas Mexico has been beautified by Germen Crew, described as an alternative art group, at the government's request. The rainbow paint job is having great effects on the city too, including a reduction in crime. Sounds like a good idea well implemented.
The GM factory in Detroit contains an old Jewish Cemetery. When GM acquired the land they agreed to leave the cemetery,which has had no burials since the '40s, intact. The company allows visitors just twice a year due to security concerns.
This image comes from Bulgaria. The story behind it, as far as I can figure out from the Bulgarian site offnews.bg (with help from Google Translate), is that the pole can be found on a road in the municipality of Tran. The road was recently expanded, but since the pole was owned by the electrical company, the municipality didn't have the right to remove it. So they simply poured the road around it. However, the municipality notes that they have now filed the necessary paperwork to remove the pole, and they hope all the documents will be processed promptly.
...The more they stay the same. A sinkhole developed on a city street in Dublin. The reason being there was a 19th century tunnel running between what was then the building housing Parliament and a brothel. Politicians and sex scandals are timeless.