Cloudhatchet (aboveground tundra fort, capped pop 89, various animal/plant additions) is in its eighth year, two migrant kids grew up into peasants and were sent down to the magma forges to apprentice as weaponsmiths. Construction has finally finished on the Cloudhatchet Colossus, an 18 floor statue straddling the main entrance. We're very mineral-poor so the main building materials are chalk, gabbro and green glass. The clothes are starting to rot off the dwarves now so I'm trying to figure out a workable "civilian uniform", probably using all the leather goblin armor we've got stored. I kinda like the idea of everyone being in leather armor and metal boots and carrying a sword.
We've got so much food and booze now (2000 urists of drink, for an 80 pop fort!) that I've just turned the farms over entirely to producing cloth and dyes, except for the small aboveground snowberry patch, but snowberries are all I can grow aboveground anyway and they only grow in winter. Our main industry is in repurposed goblin clothing.
aaand the humans just arrived. I hope they bring something better than the elves did, they only showed up with wood crafts this year.
My longest running fort ever was only 10 years back in 40d, so I'm kind of hopeful that Cloudhatchet will beat it. I need a new megaproject right now though to avoid boredom - maybe some sort of giant clear glass/iron aviary for our captured roc? Ideas welcome.