The capital of Saint Lucia is Castries. This picturesque city, located on the northwest coast of the island, serves as the main commercial center and the administrative hub of Saint Lucia. Castries is known for its vibrant markets, beautiful waterfront, and historical significance. The city is surrounded by lush mountains and offers stunning views of the Caribbean Sea. Notable landmarks include the Cathedral of the Immaculate Conception and the Derek Walcott Square, which celebrate the island's cultural heritage. Castries plays an essential role in tourism and trade for Saint Lucia.