The promenade along Agadir's beach is worth the visit. It's a huge, meandering walkway along the city's great beach and has a spectacular design. In the afternoons and at sunset, it fills with citizens and tourists which creates a lively atmosphere. The experience is really recommended.
Agadir is without doubt one of the top tourist cities in Morocco. This is because it has a very quiet atmosphere, a special atmosphere with a western touch, streets lined with palm trees, and spectacular beaches where the sun shines brightly all year long. ALso, being in a very quiet and touristic area, you can find a perfect contrast with other Morroccan cities like Marrakech or Fez, because its interest is in the architecture and historical sites there. In this destroyed city, it is almost non-existant.
Sidi Rbat Beach is located at the mouth of Oued Massa, a Mecca for bird watchers in Morocco. It's especially notable for its large population of ibises which nest on the cliffs by the sea. It's a great place to visit and the food is absolutely delicious food.