Built on the ruins of a Nabataean castle outside the city of Sakaka in northwest Saudi Arabia, Zabal Castle has one gate and four surveillance towers and is one of the city’s most popular tourist attractions. The castle is believed to have been built 300 years ago, and is open to anyone interested in the region’s rich Arab history. Its mud and stone walls tell tales of the past. Aside from being an archaeological marvel, the fort sits on the highest point in the area, offering panoramic views of the city. This photograph was taken as part of the Colors of Saudi collection.