Sumhuram Old City, also known as Khor Rori, is an ancient archaeological site near Salalah in the Dhofar region of Oman. Believed to have been founded in the 3rd century BCE, it was an important port trading in frankincense and was also involved in marine trade routes between the Mediterranean Sea, the Arabian Peninsula, and the Indian Ocean. It's reputedly associated with the legendary Queen of Sheba. The city's ruins, including a temple, fortifications, and some residential buildings, offer insights into the Hadramawt style of architecture and layout. Sumhuram was part of the frankincense trade, which was incredibly significant in ancient times. The site overlooks Khor Rori creek, which provided a natural harbor for the city. Largely abandoned by the 5th century CE, it was excavated in the 20th century and has since become a UNESCO World Heritage Site as part of the Land of Frankincense sites.