Photo taken on Feb. 3, 2026 shows historical buildings in the UNESCO-listed Old City of Sanaa, Yemen. Yemen's UNESCO-listed Old City of Sanaa is home to over 6,000 unique multi-story mud-brick structures dating back 2,500 years. (Photo by Mohammed Mohammed/Xinhua)

Photo taken on Feb. 3, 2026 shows historical buildings in the UNESCO-listed Old City of Sanaa, Yemen. Yemen's UNESCO-listed Old City of Sanaa is home to over 6,000 unique multi-story mud-brick structures dating back 2,500 years. (Photo by Mohammed Mohammed/Xinhua)

People shop for needs at a market in the UNESCO-listed Old City of Sanaa, Yemen, Feb. 3, 2026. Yemen's UNESCO-listed Old City of Sanaa is home to over 6,000 unique multi-story mud-brick structures dating back 2,500 years. (Photo by Mohammed Mohammed/Xinhua)

Photo taken on Feb. 3, 2026 shows a shop at a market in the UNESCO-listed Old City of Sanaa, Yemen. Yemen's UNESCO-listed Old City of Sanaa is home to over 6,000 unique multi-story mud-brick structures dating back 2,500 years. (Photo by Mohammed Mohammed/Xinhua)