“Antiques Roadshow,” PBS's highest-rated ongoing series, visits Winterthur Museum, Garden & Library in Winterthur, Del., on June 18 for an all-day appraisal event as part of the 2019 production tour.

The announcement of the upcoming date was made on Nov. 12. This will be the first “Roadshow” filming in Delaware.

“We're excited to visit Delaware and experience such an exceptional location,” said “Roadshow” executive producer Marsha Bemko. “Filming at Winterthur will allow our cameras to blanket the property, capturing appraisals with the action of the event as a backdrop and, when possible, taking our audience 'backstage' to places the public isn't allowed or may miss seeing.”

From each 2019 event, three episodes of “Roadshow” will be created for inclusion in the show's 24th broadcast season, to air in 2020. “Antiques Roadshow” airs locally Mondays at 8 p.m. on WHYY.

Admission to “Antiques Roadshow” is free, but tickets are required and must be obtained in advance. Fans can apply for a chance to receive one pair of free tickets per household. The 2019 Tour ticket application process opens Nov. 12 at 3 p.m. To enter the drawing for free tickets and to see complete application rules, visit pbs.org/roadshowtickets, or call 888-762-3749. Deadline for applications is Feb. 11, 2019.

At each appraisal event, around 3,300 ticketed guests will receive free verbal evaluations of their antiques and collectibles from experts from the country's leading auction houses and independent dealers. Each guest is invited to bring two items for appraisal.