The chief harbour is that afforded by the bay of Tourane at the centre of the coast-line.
There are coal-mines at Nong-Son, near Tourane, and gold, silver, lead, iron and other metals occur in the mountains.
Trade, which is in the hands of the Chinese, is for the most part carried on by sea, the chief ports being Tourane and Qui-Nhon, which are open to European commerce.
In the province of Tourane, a French tribunal alone exercises jurisdiction, but it administers native law where natives are concerned.
The chief towns of Annam are Hue (pop. about 42,000), seat both of the French and native governments, Tourane (pop. about 4000), Phan-Thiet (pop. about 20,000) in the extreme south, Qui-Nhon, and Fai-Fo, a commercial centre to the south of Tourane.
Before this, in 1787, Gia-long had concluded a treaty with Louis XVI., whereby in return for a promise of aid he ceded Tourane and Pulo-Condore to the French.