The twenty-column hall was originally intended for the exhibition of Greco-Etruscan vases. Designed by L. Klenze, the hall was designed by architect Stasov and Efimov as an ancient Greek temple: two rows of granite columns divide it into three longitudinal galleries, and the middle one is narrower than the side ones. To each couple... ... Twenty-column hall. The twenty-column hall was originally intended for the exhibition of Greco-Etruscan vases. About the project L. The Klentse hall was designed by architects Stasov and Efimov as an ancient Greek temple: two rows of granite columns divide it into three longitudinal galleries, and the middle one is narrower than the side ones.