1. The Millennium Centre, Cardiff Bay © Photolibrarywales.com Millennium Centre website

2. Used for: Exterior walls Material used: Slate Sourced: North Wales Sustainable?: From ‘waste’ created by the historic slate industry (90% of slate cut from the mountainside for roof tiles was declared not good enough and thrown away). © Photolibrarywales.com

3. Used for: Interior detail Material used: Oak, Ash, Beech, Sycamore, Alder, Birch, Chestnut and Cherry woods Sourced: mid-Wales Sustainable?: All woods come from renewable sources. © Photolibrarywales.com

4. Used for: Roof detail Material used: Stainless steel Sourced: Made near Pontypool. Sustainable?: The steel would have been made from iron ore. This comes from mining in other countries. It is a finite resource. Top 4 Countries – iron ore production Estimated iron ore production in million metric tons (2006) China520 Brazil300 Australia270 India150 © Photolibrarywales.com

5. Used for: Windows for decoration and to allow natural light through. Material used: Sheets of glass stacked together and fused in a kiln to form solid blocks. Sourced: Swansea Sustainable?: Glass is mainly sand, heated to an extremely high temperature. © Photolibrarywales.com

6. … … … … … Glass from … Metal from … (Insert school picture here)