"Inner Cardiff" consists of the following wards: Plasnewydd, Gabalfa, Roath, Cathays, Adamsdown and Splott ward on the north and east of the city centre, and Butetown, Grangetown, Riverside and Canton to the south and west. The inner-city areas to the south of the A4161 road (known as the "Southern Arc") are, with the exception of Cardiff Bay, some of the poorest districts of Wales with low levels of economic activity. On the other hand, Gabalfa, Plasnewydd and Cathays north of the 'arc' have very large student populations, and Pontcanna (situated north of Riverside and alongside Canton) is a favourite for students and young professionals. Penylan, which lies to the north east side of Roath Park, is an affluent area popular with those with older children and the retired.