 The history of Yemeni theatre dates back at least a century, to the early 1900s. Both amateur and professional (government-sponsored) theatre troupes perform in the country's major urban centres. Many of Yemen's significant poets and authors, like Ali Ahmed Ba Kathir, Muhammad al-Sharafi, and Wajdi al-Ahdal, have written dramatic works; poems, novels, and short stories by Yemeni authors like Mohammad Abdul-Wali and Abdulaziz Al-Maqaleh have also been adapted for the stage. There have been Yemeni productions of plays by Arab authors such as Tawfiq al-Hakim and Saadallah Wannous and by Western authors, including Shakespeare, Pirandello, Brecht, and Tennessee Williams. Historically speaking, the southern port city of Aden is the cradle of Yemeni theatre; in recent decades the capital, Sana'a, has hosted numerous theatre festivals, often in conjunction with World Theatre Day.