This is the Marrakech restaurant, located in the trendy DuPont Circle neighborhood here in Washington, DC. It's a unique building, and looks nothing like the buildings next to it, which look nothing like the buildings surrounding them. Outside of the granite-columned federal government buildings such as the Capital or the White House, Washington's architecture is best described as a truly wonderful assortment of random aesthetics.
This sketch was done with Sakura Pigma Micron pens and an assortment of Pantone Tria and Prismacolor Design markers into a 4" x 6" hardcover sketchbook. It was fully pre-sketched in pencil and inked onsite, as was 95% of the coloring. Thankfully, the whole process was pretty much undisturbed; no surrounding police activity, no delivery people dropping and spilling a keg of beer in front of me, no being questioned by a federal agent, and no being surrounded by homeless people looking to collect change because they're sitting next to an artist (yes; all of this has happened to me while sketching in Washington, DC!)