Police will mount a big security operation for Preston's third Royal visit since becoming a city.
Dozens of officers will patrol the streets of Avenham on Thursday when the Prince of Wales visits the Pukar Disability Centre on Oakham Court.
Insp Andy Baxter, of Preston police, said: "As far as policing is concerned it will be a medium-scale operation, not to the extent we had when the Queen visited. But because he's a royal and there is a certain level of threat which goes with a visit like that, we need security.
"We will be having a high visible police presence around the area and a search of the immediate area to check for suspicious packages which will be maintained during HRH's visit."
Prince Charles will visit the ethnic minority centre during a whistle-stop tour of Lancashire, including Clitheroe and Chipping.
The Prince will visit an IT suite and see various activities, including head massage and bead work.
He will also be invited to complete a piece of embroidery.
He will help celebrate the recruitment of the 1,000th member of Business in the Community's professional firms group (ProHelp) before launching ProHelp Rural Action.
The Prince will arrive by train at Clitheroe Station at 10.10am where he will look round the award-winning interchange.He will travel by Bowland Transit Bus to Chipping.
During his visit to Preston he will attend a private reception at Fulwood Barracks hosted by the Duke of Westminster for the MacMillan Cancer Relief Windmill Appeal for Blackpool's Victoria Hospital.