The underground street is 815 meters long, with a total area of approximately 4,446 ping, including spaces such as plazas, walkways, shops, and offices. There are 7 entrances and 5 plazas.
The Zhongshan Underground Book Street, located between the Zhongshan and Shuanglian MRT stations, provides book lovers with a brighter, more comfortable, and richer environment for reading and purchasing books. Along the street, there are new and old discounted books, the underground experimental creative stage of the Taipei Contemporary Art Museum, the Jazz Plaza, and cultural and creative products sold by Taiwanese designers. There are also retail stores for department store products, clothing, accessories, convenience stores, leisure entertainment, food, and beverages, allowing you to enjoy the fun of shopping while strolling through the underground street. In addition, the Taipei Contemporary Art Museum has planned a linear park above the underground street between the Taipei Station and Zhongshan Station, where four public art works with themes have been set up. The "Underground Experiment - Creative Stage" has been established in the underground book street, introducing various types of contemporary art into the underground street, highlighting the unique artistic characteristics, and making the MRT underground book street not only a place to display books, but also a place to showcase the charm of art information.