Catan 5-6 Player Game Extension - Unboxing and Reboxing - What's in the Box?

About Catan: 5-6 Player Expansion, from BoardGameGeek:

Allows you to add up to two more opponents to The Settlers of Catan. The only change in the rules is that there is a building round at the end of each turn in which any player can build. Belongs to the Catan Series. Expands: Catan Expanded by: Catan: Seafarers - 5-6 Player Extension Catan: Cities & Knights - 5-6 Player Extension