Big Brother 2003, also known as Big Brother 3, was the third season of the Australian reality television series "Big Brother". The season lasted 86 days, starting on 27 April 2003 and ending on 21 July 2003. The season was the most complicated to date with housemates starting in two separate houses - a "round house" and a "square house". Housemate Benjamin Archbold was sent in first and spent the entire first day by himself. Other housemates were progressively admitted. On Night 22, all Housemates were locked into their respective bedrooms and a construction crew spent the night merging the two houses and revealing the hidden swimming pool and kitchen that had been in between the two smaller houses. Housemates were released into their new combined house on the morning of Day 23. Later in the day, a bathroom linking the two bedrooms was revealed.