For the first time, Sydney will open its doors to the city's most stunning and breathtaking views from the top. The Sydney Open festival invites people into new and old structures and nooks within the city on November 5-6.

With the festival approaching on its 12th year anniversary, the premier open building event will offer behind the scenes access to several buildings in Sydney, Australia.

Regular tickets will grant people access to the top floors of the Barangaroo towers but there will be four "Golden Tickets" to be won that will allow people to have access to the rooftop and 13 double Golden Tickets for St James station's disused rail tunnel, according to Stuff.

Lucky golden ticket winners will have a rare chance to witness the view of the city from the rooftop of Two International Towers since a regular ticket will only grant access to floors 41 and 38.

"Views extend north beyond Chatswood, west far beyond Parramatta to the blue of the mountains, and further south than Botany Bay, which looks, from that high up, only a stone's throw away," as stated in the Sydney Morning Herald.

Great Synagogue, the AMP Building, the Lands Department Building, and HASSELL' new studio in the former wool store at pier 8/9 Walsh Bay, and the Calyx in the Royal Botanic Garden will also participate in the Sydney Open Festival.

Sydney Open organizer Caroline Butler-Bowdon said that with their festival each year, they focus on the Sydney CBD and then a new part of the city. She is the director of curatorial and public engagement at Sydney Living Museums, and has been organizing the festival since it started in 2012.

"This year we decided to focus on Walsh Bay, the Rocks and Barangaroo," Dr Butler-Bowdon said.

"Sydney is in the midst of an economic boom and during those buoyant economic times there's lots of new builds," said Dr Butler-Bowdon. "We are in one of them," she said from Barangaroo, "200 George Street is another one," she said of another new structure that will also be open for access during the festival.