Websitewhc.unesco.orgLandmarks of Saba — UNESCOUNESCO · 2023 · UNESCOOpen on whc.unesco.org 0Why it matters: WH listingPlacesThe place this coversMarib North Sluice & Northern Oasis Canal (Sadd Ma'rib al-Shamali)🇾🇪 Yemen · Ma'rib Governorate, Balaq Hills, north abutment of Great Dam · Hydraulic works