Final Answer:
The Hermitage Museum is located in the city of St. Petersburg, Russia.
Explanation:
The Hermitage Museum, one of the world's largest and most renowned art museums, is situated in St. Petersburg, Russia. It was founded in 1764 by Catherine the Great and has since grown into a vast complex of multiple buildings.
The museum houses an extensive and diverse collection of art and artifacts, including masterpieces by artists such as Leonardo da Vinci, Rembrandt, Michelangelo, and many others. The Winter Palace, part of the Hermitage complex, serves as the main entrance to the museum and is an iconic symbol of St. Petersburg.