Mariinsky Palace, also known as Marie Palace (Russian: Мариинcкий дворец), was the last Neoclassical imperial palace to be constructed in Saint Petersburg, Russia. It was built between 1839 and 1844 to a design by the court architect Andrei Stackensneider. The palace stands on the south side of St Isaac's Square, just across the 99-metre-wide Blue Bridge from Saint Isaac's Cathedral. In the 18th century, the plot belonged to Zakhar Tchernyshov and contained his mansion (1762-68), which was occasionally let to Prince of Condé and other foreign worthies visiting the Russian capital. In 1825-39, the Tchernyshov mansion housed a military school, where Mikhail Lermontov studied for two years.