St. Isaac's Cathedral, Russia

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The view of St. Petersburg from the roof of St. Isaac's Cathedral.

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The view of Winter Palace and the Palace Square from the roof of St. Isaac's Cathedral.

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The view of St. Isaac's Cathedral across Neva.

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The dome of St. Isaac's Cathedral.

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Under the Vaults of St. Isaac's Cathedral: a series of concerts of Russian religious music. Nikolai Kornev conducts the St. Petersburg Chamber Choir in a performance of Rachmaninov's "Vsenoshchnoe Bdenie," or "Vespers." St. Isaac's Cathedral, 10 p.m.