The Euclid telescope, just launched today, will be able to observe galaxies out to 10 billion light-years. Here’s the largest map I could find (1 billion light years) that includes the Milky Way, Laniakea, the Shapley supercluster, the Perseus–Pisces supercluster, and the South Pole Wall.
https://irfu.cea.fr/Projets/COAST/southpolewall-graphics.html
And of course, there’s the famous Isaac Asimov short story about this, “The Last Question”.
I admittedly have not read a lot of Asimov but The Last Question is one of the few stories I’ve read in full (it helps that it’s a short story) and I absolutely loved it!