Despite its density, Hanoi incorporates several significant green spaces and is actively expanding its park systems.
* **Ba Vi National Park:** A sprawling mountainous reserve featuring diverse tropical flora, wildlife, and peaks often shrouded in mist. * **Thong Nhat Park (Lenin Park):** One of the largest and oldest parks in the inner city, featuring a large lake, walking paths, and shaded areas popular for morning tai chi and aerobics. * **Yen So Park:** Located in the southern part of the city, this is Hanoi's largest urban park, featuring expansive lawns, lakes, and spaces for festivals and camping. * **Soc Son Forests:** Located north of the city near the airport, this hilly, forested area is a popular weekend getaway for camping and eco-tourism.