There are several wadis in Oman and in my opinion are also the prettiest places in the country to visit. A few are conveniently located within two hours southeast of Muscat, providing for an optional day trip for those short on time while visiting Oman.
They are better visited, however, by staying in the nearby area. While there is only one hotel in the closest town, Tiwi (population 1,950), there is nearby camping on the popular Fins Beach, as well as a handful of options in the larger City of Sur (population 71,150) farther south.
GET OUTSIDE!