Initially the trading took place inside the facilities of the museum, but by the end of the year the increasing number of attendees became too large for the venue, as collectors sought records that were otherwise impossible to get from established outlets. The trading became selling in many cases, with record dealers taking advantage of the new market for rock "rarities". The gathering extended to the street right in front of the museum, and several stands were erected, transforming the event into a "tianguis", a kind of outdoor flea market or bazaar. The museum became a popular hang-out for punks, new wavers, hippies, rastafaris, and other subcultures who were able to express themselves freely at the weekly gathering and meet others with the same tastes.