The Beijing Tiantan Hospital is mainly a medical institution and not a place for entertainment. However, in its vicinity, you can find some interesting things. For example, there are parks where you can take a stroll and enjoy the natural scenery. You can also find local cafes and restaurants to relax and taste delicious food. Additionally, the surrounding areas may have some small shops where you can browse for unique items. But it's important to note that when visiting these places, don't disrupt the normal operation of the hospital.