Dar as-Sa'd (Arabic: دار السعد) or Dar as-Sa’ada (Arabic: دار السعاده), all of which mean "House of Happiness", is a royal palace located in Sana'a, Yemen. It is located near Qubbat al-Mutawakkil Mosque dome in Tahrir Square in the city centre, and currently houses the National Museum of Yemen. Source: Wikipedia (en)