Sigh, that somewhat misses the point, but sure.
Some of the projects I can think of were during very different socio-economic periods, where you didn't have to pay your labor for their time, but simply keep them alive. Others were not.
Ideally, if we don't find life, or evidence of life on Mars, over the coming decades we become the life on Mars. What is being done now paves the way for that. I don't really think that anyone wants to go to Mars if we can't reliably get stuff to the surface in one piece, for example.
This. Heck, we build places on bad land here on Earth all the time (sinkholes, earthquakes, mudslides, etc.). We really need to find a stable place to build on Mars if we plan to go there.In order to do that, we'd first need to be able to deliver objects to the surface of Mars reliably. But we'd also need a further study of circumstances on the surface.
If you are referring to the Egyptian pyramids, my understanding is that there is compelling evidence they were built by paid workers, not slaves, and that they were not just vanity projects, but they played a significant role in creating create a national/religious identity for the unified Egypt (though this may have been an unintended side effect).Well, I dunno. The classic examples of slave-built multi-lifetime projects are pyramids, and they don't benefit the living, so are hardly examples of long-timescale projects for future generations.
If you are referring to the Egyptian pyramids, my understanding is that there is compelling evidence they were built by paid workers, not slaves
, and that they were not just vanity projects, but they played a significant role in creating create a national/religious identity for the unified Egypt (though this may have been an unintended side effect).