Nursing a mega-pricey çay, coffee or beer at one of the Çırağan's terrace tables and watching the scene around İstanbul's best swimming pool, which is right on the Bosphorus, lets you sample the lifestyle of the city's rich and famous. The hotel occupies part of the 19th-century Çırağan Palace; look out for the photos of celebrity guests.
A day pass to use the pool while you're here costs €100 Monday to Thursday, €160 Friday to Sunday.