Taken from the website:
When:
On Saturday 23 February from 10.00 to 15.00
An open day will be held on Saturday 23 February.
Bookings are essential as small pre-booked groups only will be escorted around the site by the archaeologists. Tours will commence on the hour, twenty past and forty past each hour between 10am and 3pm. 
Please e-mail openday@ahl.com.au to book an available time.
Where:
478 George Street, 478 George S Sydney 2000 
Notes: Each group will have a 20 minute tour of the site. Sturdy shoes are essential. Bookings are essential. 
Other Services:
Contact:
AHL 
Catherine Hart 
9373 6585 
openday@ahl.com.au

 
    ![Free Tour of an Archaeological Dig Site in Sydney CBD. Bookings Are Essential. [NSW]](https://files.ozbargain.com.au/n/54/94654.jpg?h=67472303)





Free is good!