A tour like the 'Culinary Backstreets of the Bazaar Quarter' is really good and great fun if they enjoy food. It's not cheap, but you get very well fed and get taken to places you'd never know about, so it's eye-opening and educational.

Travel

My niece and two friends are going to Istanbul for three months — any advice?

0xbitcoiner

A tour like the 'Culinary Backstreets of the Bazaar Quarter' is really good and great fun if they enjoy food. It's not cheap, but you get very well fed and get taken to places you'd never know about, so it's eye-opening and educational.
-Tom