故宫是中国古代皇宫，位于北京市中心。如果你想介绍故宫给外国朋友，以下是一些简单的英语句子。

1. The Forbidden City is a palace complex that served as the imperial palace of China's emperors for nearly 500 years.

2. Located in the heart of Beijing, the Forbidden City is a magnificent display of traditional Chinese architecture and art.

3. The palace complex consists of 980 buildings and covers an area of over 720,000 square meters.

4. Visitors can explore the palace's many halls, pavilions, gardens, and courtyards, each with its own unique history and significance.

5. The Forbidden City is a must-see destination for anyone interested in Chinese history, culture, and art.