I drew these guys with a Pilot Custom 823 FA and Platinum Carbon Black ink. The FA nib has a good drawing width on watercolor paper - one of my favorites. It's a soft nib but I don't use the line variation, just some nice shock absorption with each downstroke. The Carbon Black ink is out-of-this-world good, though being pigmented I fear keeping it in too many pens.
Architectural subjects are not my penchant....but this is a pen line drawing of our house which I did a few weeks ago near the beginning of the "stay at home" phase of our lives. Seemed a fitting subject. Just a couple of micron pens on a smooth surfaced paper.
Happy Thanksgiving! This is "Sunday Wonderland," colored with Holbein watercolors on 6x8 paper. May your Thanksgiving be as bright & happy as pictured here! (And may you ride a horse-thing, too.)