Istanbul

[Blib]

The Blibs, me, Mrs Blib & Master Blib are travelling to Istanbul in a couple of weeks to attend a wedding. We are there for four days. The wedding will take up one whole day and so I'm looking to suck the PH massive's brains for things to do on our free days.

We are aware of the main attractions much as the Blue Mosque, Topkapi Palace and the Grand Bazaar and any and all tips or info. on these places would be gratefully accepted. Our hotel is very central so we're within walking distance of most of the major tourist attractions.

Any must dos, or must avoids? Anything special but out of the way that you stumbled upon on your visit?

Thanks.