Expedition 33 Commander Suni Williams starts off her tour of the International Space Station with a look at its nodes -- Harmony, Tranquility and Unity -- which include the crew's sleeping quarters and hygiene station.

Destiny, Columbus, Kibo:
http://www.youtube.com/watch?v=ntYP7cRozhk

Cupola and Leonardo:
http://www.youtube.com/watch?v=jbZ7lDlVeIo

Zarya and Zvezda:
http://www.youtube.com/watch?v=IJT0FMN_Ua0