The Commodity Exchange Building (or Silk Exchange) was built in the 15th century in 15 years by the architect and engineer Pere Compte, living in Valencia to replace the old Lonja (Trade Hall) that had become insufficient facing the prosperity of the city at this time. It was built on the model of the Lonja of Palma de Mallorca.
The Lonja de la Seda has become the symbol of power and wealth of Valencia in becoming a stock exchange, a bank and a gathering place for merchants.
The Contract hall (Sala de contratación), also called the room of columns (Salón columnario), is the main room and the most impressive of the Lonja de la Seda. This hall with 24 columns twisted was the place to realize commercial transactions.