Keeping up the antiques theme, nearby to Plaza Dorrego, surrounded by the streets Bolívar, Carlos Calvo, Defensa, and Estados Unidos, is the San Telmo Indoor Market, a massive iron structure built back in 1897, which fills the entire block. Historically the building was a produce market, but when the outdoor fair started in 1970, it soon shifted to antiques, and these days it is just as interesting to wander around in the outdoor version. It is also quite funny to see a few of the food produce stalls holding on to their past heritage, side by side with the antiques. Some of the smells are not what you would usually expect when looking at such valuable old pieces.