Answer:
Hermitage museum
Step-by-step explanation:
The Russia's home of culture and arts, the hermitage museum is one among the popular art museums of the world.
This museum is the main attraction in St. Peters burg for art lovers which has the world's massive collection of paintings. An interesting, yet surprising fact about this museum is that there are cats kept in its basements to dispose mice.
In 1795, According to history, the palace's hallways were spread through mice. Elizabeth, the daughter of the great Peter commanded to send 13 cats from the best killer breeds to St. Peters burg to kill those pests/mice. The descendants of the 13 cats, from Saint Catherine the great's court were kept as pets in the museum that roams in the hallways.