Built between 527 and 565 AD at the foot of Mount Sinai for Emperor Justinian, this monastery later took its name from St Catherine of Alexandria, whose remains are said to rest here. It’s more fortress than church, with thick stone walls guarding the Church of the Transfiguration, the chapel of the Burning Bush, and a monks-only library packed with ancient manuscripts. Inside, you’ll find mosaics, religious ornaments, and some of the oldest illuminated manuscripts in the world on display. Outside, don’t miss Moses’ Well and the garden with centuries of history. The place is open most mornings but closed on Fridays, Sundays, and Orthodox feast days. Still active today, the monastery holds importance across Christianity, Judaism, and Islam, and continues its Greek Orthodox traditions uninterrupted.

The fascinating history of the city of Buraidah is on display in this museum, designed like a mini Najd fort. It showcases a number of well-preserved artefacts and pieces of art, including a pavilion with collections that once belonged to King Abdul-Aziz himself. Automotive enthusiasts will love the old cars, especially King Abdul-Aziz' white Cadillac.

The oldest church in Dortmund, dating from the 13th century is named in honour of the city’s patron saint, Reinold. Climb more than 200 steps to the bell-tower for fabulous views over the city. Not only the view is spectacular, in the church you can also discover artifacts which have been preserved since the Middle Ages. One of the most famous artifacts is the wooden sculpture of Reinold from the 14th century.