The demolition of St David's House in Cardiff city centre is continuing.
The 120,000 sq ft building on Wood Street is being knocked down as part of the development of Central Square.
Work started on the end nearest the Wood Street bridge last month, and now the building nearest the city centre is going.
Months were spend planning for the huge job that will see the central part of the city completely transform.
Office workers on their lunch breaks on Thursday watched as the large crane carried on with the demolition.
By-standers watched as the bricks came down.
One onlooker said: "It was an impressive sight and quite mesmerising to watch. With all the new buildings in the area it will be good to see this particular building going."
These pictures show the work underway at the other end:
The final demolition is expected to be completed by September with the hardcore to be recycled.
The work will stopped on March 15 for the Wales v Ireland rugby international but has now restarted in earnest.
Before the demolition WalesOnline took a walk around the builiding. You can see all the Inside the huge abandoned office block being demolished in the centre of Cardiff
Inside the huge abandoned office block being demolished in the centre of Cardiff
What will take the place of the building?
In place of the building there will eventually be a 5,000 square metre of open public space with a retail pavilion and storage for up to 120 bikes.
