Els Encants is a flea market under a single mirrored roof. The canopy is one folded plane, tilted so that it reflects the market underneath, and from the ground floor you look up and see the stalls, the buyers and yourself, upside down and broken into facets. Ramps spiral up around the edges to more shops above. Underneath it the trade is what it has always been: house clearances, tools, furniture, records and things nobody can name.
A second-hand market has run in Barcelona since the medieval city, documented from the fourteenth century, and it has moved around ever since. Most recently it moved in 2013, when it left the open lot it had occupied since 1928. Nothing about the trade changed, and the traders are the same families. On market mornings the ground floor still runs a live shouted auction of whole house clearances: bidders stand in a ring and lots go in seconds. It is one of the last public sales of that kind left in western Europe.