I am a North African country with a history marked by Berber, Phoenician, Roman, and Arab influences, and a landscape that spans from the Mediterranean coast to the Sahara desert. My economy is heavily reliant on energy exports and tourism. Which country am I?

1. My capital city is one of the largest in the Maghreb.
2. I am known for a unique style of architecture that blends Islamic and French colonial elements.
3. I have significant deposits of natural gas and petroleum.
4. My cuisine features dishes like couscous and tagine.