Within striking distance of Abu Dhabi, the rugged Hajar Mountains offer an excellent opportunity for hiking and walking as well as an escape from the heat of the desert and coast.
The second city of the United Arab Emirates, Dubai is around an hours drive to the north, and is home to some excellent museums as well as the legendary shopping that is some of the best in the world.
The university city of Sharjah is located to the north of Dubai, and is home to museums and art galleries, as well as a traditional Arab Souk.
Fujairah is on the Indian Ocean coast around 3 hours from Abu Dhabi, and is a great place to visit for a few days if the bustle of the city gets to be too much.