4 Days in Istanbul: From Hagia Sophia Grand Mosque to Basilica Cistern

Most major nationalities, including US, UK, EU, and Australian citizens, require an e-Visa obtainable from evisa.gov.tr before travel, typically allowing a 90-day stay within 180 days. Indian citizens often need an e-Visa with additional requirements, such as a valid visa from a Schengen country, UK, or USA. All passports must be valid for at least 6 months beyond your intended departure date. Always check evisa.gov.tr for your specific country's requirements.

Istanbul is generally safe for tourists, especially in well-known areas like Sultanahmet, Taksim, and Istiklal Street, which are heavily policed. The primary risks involve aggressive drivers who often ignore traffic rules and potential overcharging by less scrupulous vendors or taxi drivers. Specific areas like certain waterfront parks between Bakırköy and the old city walls are best avoided at night. For emergencies, dial 112, or contact the Tourist Police in Sultanahmet Square.

The local currency is the Turkish Lira (TRY). While credit cards are widely accepted in larger establishments, it is highly advisable to carry cash for smaller purchases, street food vendors, local markets, and for tipping. ATMs are readily available throughout the city, but be aware of potential foreign transaction fees from your bank.

Tipping is not mandatory but appreciated. In casual eateries and for taxis, rounding up the bill or leaving a small amount of change is common. In more upscale restaurants, a 5-10% tip is generally expected for good service. For tour guides and hotel staff (e.g., bellhops), a small gratuity of 20-50 TRY is appropriate, depending on the service provided.

For Istanbul, pack comfortable walking shoes due to the city's hilly terrain and cobblestone streets. Include lightweight long pants and shoulder-covering shirts for visiting mosques and religious sites. Women should also pack a pashmina or scarf for head covering at mosques (often provided, but having your own is convenient). Layered clothing is recommended for varying temperatures throughout the day and evening. A compact umbrella is useful for unexpected rain.

The most efficient way to navigate Istanbul is using its extensive public transport system (metro, tram, bus, ferry) with an Istanbulkart, which you can purchase and load at major stations. Taxis are also readily available, but it's best to use ride-hailing apps like BiTaksi to ensure fair pricing and metered fares. Be aware that Istanbul's drivers can be aggressive, so public transport is often a more relaxed option.

When visiting mosques, both men and women should dress modestly, with shoulders and knees covered. Women must also cover their heads; scarves are usually available at the entrance of major mosques like Hagia Sophia and the Blue Mosque. Everyone must remove their shoes before entering the prayer hall; shoe bags are provided. Be mindful of prayer times, during which visitors are asked to wait or re-enter after the prayers conclude.

From Istanbul Airport (IST), the M11 metro line connects directly to Gayrettepe station, where you can transfer to the M2 metro line towards Taksim or Sultanahmet. Alternatively, Havaist airport shuttle buses offer direct routes to various central points like Taksim Square and Sultanahmet, with comfortable seating and luggage space. Taxis are also available but are the most expensive option.