Muscat was an interesting city, almost all white buildings with a desert colored hills on one side and a deep blue gulf sea on other side. It was one of the most important sea ports for trading with India and rest of Asia.
Oman's capital city has got lots to offer the intrepid traveller - miles of pristine coast line, coral reefs, dolphin spotting, scuba diving, dune bashing, sandboarding and world class rock climbing - all within the city limits. If you're tastes run more along historical/cultural lines, score some tickets to the Royal Opera House and while you're waiting, absorb the long, illustrious (yet relatively unknown) history of the Sultanate at Bait Al Zubeir or Bait Al Muzna after haggling for frankincense and pashmina till your throat's sore in Mutrah's stunning seaside souq. A sundowner of sheesha and fresh squeezed lemon juice with mint at the Oman Dive Center is a perfect way to top off a day in this little undiscovered corner of the Arabian Peninsula.
A pleasant base for exploring the surrounding countryside. Be sure to visit Mutrah -- it is a highlight. Less glitz than other Gulf capitals but warm with authenticity even if the sights aren't spectacular.
best way to enjoy the coastline of Muscat is to take the day cruise and enjoy a good snorkelling!