These enormous cityscapes are mind-blowingly detailed
This is Ben Sack's A Single Note - a cityscape drawn entirely with a pen. But it is far more than meets the eye, because this is - four feet (1.2metres) across - and detailed.
That intense detail becomes all the more impressive when you realise these aren't real cityscapes: the circular city might contain an antique cathedral here, a futuristic skyscraper there, and a Parisian park in the background (perhaps behind the Coliseum).
If you look closely, you can even find a famous landmarks dotted across the city. The level of detail is phenomenal, with each large-scale original taking months to complete.
And he does it all with one of these:
"I’ve been drawing since about the age of two ... regarding how, I can credit patience and a debilitating love for history and architecture," Sack recently wrote on his Tumblr.
He also told Colossal that he's interested in western antiquity: "Yes there was marble, lots of marble, and monuments galore, however these urban centres were huddled together and unless you were considerably wealthy, life in dreamy antiquity was often a heroic struggle," he said.
Sack also created a time-lapse film showing the painstaking work that goes into creating this kind of project.
You can buy prints of A Single Note at Ben's website here.
