The square is host to the start of the festival, on 6 July, with the txupinazo and to the end of the festival, on 14 July, with the Gaixoa Ni or Pobre de Mí.

King Charles III of Navarre, with the purpose of ending the constant fights between the three burguak or burgos (Nabarreria, San Zernin and San Nikolas) promoted Batasun Pribilegioa or Privilegio de la Unión in 1423.

By this treaty, the three urban jurisdictions became a single municipality, under the same coat of arms and taxes.

On the field between the three burguak was built Pamplona-Iruña City Hall, which lasts till today.

[4] It is located in the confluence between Santo Domingo, Mercaderes, San Zernin, Berria/Nueva, Zapateria and Calceteros streets, at 450 m (1,480 ft).