Major work has begun to slow traffic on a busy city centre road junction opposite Cardiff Castle.
The road outside Cardiff Castle is one of the busiest in the city centre
The existing junction will be replaced with a raised "table top" junction to improve pedestrian access to the visitor attraction.
The work, which will cost £80,000, is part of a series of developments which Cardiff Council hopes will improve links between the castle and the city.
The alterations are expected to take until the end of March.
The work will take place on the junction of High Street, Castle Street and Duke Street, and will be carried out at night to minimise disruption.
It is in preparation for the planned opening of the castle's North Gate - the first time in its history it has been open to the public.
Councillor Nigel Howells said: "This is all part of the council's strategy to link Cardiff Castle and its parklands with the city centre.
"This will be accompanied by another key pedestrian crossing on Castle Street bridge which will allow access from the end of the River Walk to the entrance to West Lodge in Bute Park and the water landing station."