Sisters of the Infinite Schism

The Sisters of the Infinite Schism was, according to the Eleventh Doctor, "the greatest hospital in the universe." (TV: Let's Kill Hitler)

While the Eleventh Doctor was travelling with Kazran Sardick, the TARDIS sent him to the Sisters of the Infinite Schism to recover from tree sap burns he had sustained. The Doctor spent several months here before returning to retrieve Kazran and his ancestors from the tree. He made a mental note to remember the Sisters of the Infinite Schism on future adventures. (AUDIO: The Top of the Tree)

Amy Pond, Rory Williams and the Eleventh Doctor took River Song there to recuperate after she had sacrificed her powers of regeneration for the Doctor. Upon leaving the hospital, River would start her education in archaeology at the Luna University, setting her on a path to rejoining the Doctor for the adventures he had already experienced. (TV: Let's Kill Hitler)