Central Telegraph
In 1925 Alexander and Leonid Vesnin teamed with structural engineer Alexander Loleyt. Loleyt's structural scheme disposed with external load-bearing columns altogether, allowing unrestricted use of glass curtain walls. The idea, however, has not caught their attention instantly: the Vesnins and Loleyt continued the style of "Arcos" in their 1925 Central Telegraph and TSUM department store drafts, gradually moving to simpler, larger, laconic shapes. In 1925 they stopped just one step short of glass curtain walls running the whole length and height of the building (the future International Style).