bustle cosmopolitan

[user_gary]

Hidden away in the cosmopolitan bustle of Mumbai, the heritage bungalows that date back to over 200-years are reminiscence of the pre-independence era. But a state order by the Brihanmumbai Municipal Corporation plans to demolish the old structures for making high-rise apartments.

please explain the higlighed one.

[Anglika]

Hidden away in the cosmopolitan bustle of Mumbai, the heritage bungalows that date back to over 200-years are reminiscence of the pre-independence era. But a state order by the Brihanmumbai Municipal Corporation plans to demolish the old structures for making high-rise apartments.

please explain the higlighted words/phrase.

cosmopolitan bustle = the busy life of a major city