Tourism Auckland has a website with information http://www.aucklandnz.com/.  Visitor guides and brochures can also be downloaded from this website.

For all visitor inquiries 
Tel: +64 9 367 6009
Tel: 0800-282-552 (Reservation calls within NZ only)
Tel: 1-800-888-454 (Reservation calls from Australia only)
Fax: +64 9 367 6000
Email: reservations@aucklandnz.com

This is the link to the city council website:  Auckland - City of Sails

This is the Tourism New Zealand webpage for:  Auckland