What is Greenwich famous for?

Google it.

spam bots.

It's like Greenwich happy hour but not so pleasant.

Greenwich mean time, and being latitude 0, it was also home for the king and queen before Buckingham Palace.

It also has a wonderful little market at the weekend
You can also visit the recently restored Cutty Sark Superb !

ANS 2 Greenwich is also famous for the Royal Observatory and the Royal Naval College.

Also for National Maritime Museum