Sprawling Haidian is known for the Summer Palace, an imperial retreat with classical gardens, a vast lake crossed by arched bridges, and pavilions on forested Longevity Hill. Nearby Yuanmingyuan Park has 18th-century palace ruins amid landscaped grounds and lakes, while Jingchun Garden is popular for picnics. Nightlife centers on lively student district Wudaokou, which is packed with relaxed bars and food stalls.