Istanbul, verdict by verdict

Istanbul is one of the few cities that can overwhelm a week: Byzantine cisterns and Ottoman palaces on the European side, a living food culture from kebab houses to meyhane taverns, ferries that cross continents for the price of a coffee, and a scale of sixteen million people across thirty-nine districts that no guide fully tames.

The real caveats: the top sights now charge serious admission, with Hagia Sophia's gallery, Topkapi and the Cistern all paid or steeply repriced since 2024. The taxi hustle is real enough that the official apps and the tram are the better answer, Sultanahmet's restaurant strip is the weakest eating in the city, peak Sultanahmet and the bazaar run shoulder to shoulder, and the nearest real beaches are an hour-plus away.

Four days is the minimum: two for Sultanahmet and the bazaars, one for Karakoy, Galata and Beyoglu, one for a Bosphorus loop or the Asian side, and a week adds the Princes' Islands, Balat and a Turkish bath without rushing. April, May and October are the sweet spots. What it wins over every rival is depth plus value: this density of world monuments at this price exists nowhere else, and the Bosphorus makes ordinary transfers feel like sightseeing.