I just finished (re-) reading '101 Best Beginnings ever written' by Barnaby Conrad.
It is not just about the good beginnings, but the bad ones too. One of Dicken's novels is mentioned, where he opens up with a dozen (slight exaggeration) page description of fog.
At the risk of being labelled a shill, this book is recommended.
I especially enjoyed the little story where Upton Sinclair, on a transatlantic crossing saw a young lady start to read one of his novels. He had never seen anyone actually reading his books and was enchanted by the sight. She read one page, got up, went to the railing and dropped his book into the ocean.
This incident made me want to look up the book to see what could have been so bad (my library didn't have a copy, so I haven't read it yet.): http://www.patrickkillough.com/books/sinclairlewis_coolidge.html
The book that opens with a description of fog-bound London is Bleak House. It's a brilliant example of landscape (well, cityscape) embodying both mood and theme.
Upton Sinclair did not write Sinclair Lewis's The Man Who Knew Coolidge. Amazon lists a few copies, including a US first edition for $57.50.
I just snagged the British first edition, only $18.50.