The decision to start the construction of the new Cathedral was signed in 1826 by Prince Ioan Sandu Sturdza. Due to several predicaments that occurred afterwards in the city of Iasi (fire, pestilence) the beginning of the construction was postponed. The construction works started in 1833 by the endevour of Metropolitan Veniamin Costache. Johann and Gustav Freiwald designed the plans of the church in the neoclassical and renaissance style. This same style has been used for many great chruches in West European countries.