Prince Charles and his wife Camilla, Duchess of Cornwall, have wound up their six-day tour of Australia by visiting a number of Perth attractions.

The couple began their day with a church service at St George’s Cathedral in the CBD, where prayers were said for the victims of the Paris terror attacks.

About 50 people gathered outside the cathedral to get a glimpse of the royal couple, and the Duchess was presented with a small posy by a young girl.

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Following that the Prince officially opened the restored State Buildings, adjacent to the cathedral on St Georges Terrace, that have been vacant for 17 years.

The buildings, which have variously housed premiers’ offices, the state treasury and police courts over a 100-year period, have been converted into a luxury hotel, restaurants and shops.

Prince Charles chatted with architects involved in the restoration, as well as retailers that have moved into the new buildings.

The Duchess of Cornwall spent the rest of the morning at the State Library where she met a group of pre-school children and their parents who are learning English through a story-based program.

In Kings Park more than 100 people waited in blazing sunshine for the royal couple, some with picnics and eskies.

Prince Charles visited the Biodiversity Conservation Centre in the park, which studies native plant species.

The couple will conclude their duties at the State War Memorial’s Flame of Remembrance, which was first lit by the Queen in 2000.

On Saturday the couple visited Albany, before enjoying a 67th birthday party for the prince at the Cottesloe civic centre, overlooking the iconic beach.