Saint Stephen’s Orthodox Church, also known as the Bulgarian Iron Church, is a unique and striking landmark in Istanbul, famous for its prefabricated cast-iron construction. It's easily accessible via public transport or a pleasant walk along the Golden Horn, though some areas nearby may have uneven terrain. Visitors can comfortably explore the church solo, appreciating its distinctive architecture and serene interior; guided tours are available but not essential for enjoyment. The church is generally open year-round, with no significant seasonal restrictions, though checking specific holiday hours is advisable. Entry is typically free, though donations are welcomed to help with maintenance. A typical visit lasts about 30-60 minutes, allowing ample time to admire its intricate details and take photographs. Remember to dress respectfully as it is an active place of worship, and combine your visit with exploring the charming, historic Fener and Balat districts nearby for a richer cultural experience.