Holy Trinity Cathedral, Yekaterinburg (must see)

The three-domed Holy Trinity Cathedral was built in 1818 in the classical style. The original building was intended as a prayer house for Old Believers. The authorities, however, didn't grant permission, so until 1838 the temple remained inoperative. In 1838, J. M. Ryazanov and some of his supporters joined the Orthodox faith and the temple was officially sanctioned. The north chapel, consecrated on October 12, 1839, was erected in the name of Saint John Chrysostom. The south chapel, built in the name of Nicholas, was consecrated on October 13, 1849. The main temple, which honors the Holy Trinity, was consecrated 2 1/2 years later on May 13, 1852.