As you know, there are four properties that make up this World Heritage Site and I visited just one of them: Bois-du-Luc. I enjoyed the property and thought it had a good mix of elements that represent the heritage values of the site. There were authentic buildings from the mine and its operations, there was a good museum with exhibits that told the story of the workers very well, and there was the town around the main site that was used by the workers and their families.

Although I didn't visit the other three properties, I did some research and spoke to people in Belgium about them. With a bit more time (and a car), I would have also visited Blegny to have the underground experience, and possibly Grand-Hornu to see the different style of architecture there.

Overall, I think it's an interesting site and I'm always partial to the industrial ones. It's been well preserved and a lot of effort has gone into offering experiences for visitors to understand the site and see different elements for themselves.