Grant on Nostr: Especially if you don't see the walls. 🙂 (I saw a fabulous exhibition of Escher at ...Especially if you don't see the walls. 🙂(I saw a fabulous exhibition of Escher at the Edinburgh Festival in 2015. https://www.nationalgalleries.org/art-and-artists/features/mc-escher-farewell-stairwells )