The Kalyan Mosque, a centerpiece of Bukhara's UNESCO-listed Po-i-Kalyan complex, is a must-visit for its monumental scale and intricate Islamic architecture. It is generally accessible, with its vast courtyard suitable for most visitors, though modest dress (shoulders and knees covered, headscarf for women) is required, especially when entering prayer areas. While explorative solo visits are possible, a local guide is highly recommended to fully appreciate its rich history, architectural details, and cultural significance within the complex. The mosque is open year-round, but spring (April-May) and autumn (September-October) offer the most comfortable weather for exploration, avoiding the extreme heat of summer and cold of winter. Entrance is typically covered by a general ticket for the Po-i-Kalyan complex, usually costing around 20,000-30,000 UZS (approx. $2-3 USD), and a typical visit to the entire complex, including the mosque, takes 1-2 hours. Arriving early morning or late afternoon is ideal for photography and to avoid larger crowds.