The National Botanical Garden of Iran is one of Tehran's best green escapes, laid out on a large site west of the city. Its collections represent Iranian habitats as well as plant communities from other parts of the world, with walking paths, water features, and seasonal displays.
Because it sits away from the central museum corridor, it needs deliberate planning and transport time. The payoff is space, cleaner air, and a different view of Tehran's geography, especially for travelers interested in botany, landscape design, or a slower outdoor day.