Under Russian government, Chișinău became the capital of the newly annexed oblast (later guberniya) of Bessarabia. By 1834, an imperial townscape with broad and long roads had emerged as a result of a generous development plan, which divided Chișinău roughly into two areas: the old part of the town, with its irregular building structures, and a newer city centre and station. Between 26 May 1830 and 13 October 1836 the architect Avraam Melnikov established the Catedrala Nașterea Domnului with a magnificent bell tower. In 1840 the building of the Triumphal arch, planned by the architect Luca Zaushkevich, was completed. Following this the construction of numerous buildings and landmarks began.