Cardiff is a port city on the south coast of Wales at the confluence of the River Taf at the mouth of the River Severn. In 1955, the city was proclaimed the capital of the country. The Wales Millennium Center is located in a fully modernized area of Cardiff Bay, where opera concerts, national orchestra performances, theatrical performances and dance performances, and Mermaid Pier, known for its shops, take place. In the state-of-the-art Senedd building, designed by architect Richard Rogers, the National Assembly for Wales meets. The population of the city is 330 000 people.