BOSTON, Mass. — “Antiques Roadshow,” PBS’s most-watched ongoing series, is headed to six cities for its summer 2016 tour: Orlando, Florida; Virginia Beach, Virginia; Indianapolis, Indiana; Fort Worth, Texas; Palm Springs, California, and Salt Lake City, Utah.

Episodes recorded in those cities will be included in the 13-time Emmy Award-nominated production’s 21st broadcast season, to air in 2017.

“‘Antiques Roadshow’ is thrilled to be on the road again in search of America’s hidden treasures,” said Executive Producer Marsha Bemko. “This year we are excited for first-time visits to Fort Worth and Virginia Beach, and a return to Indianapolis for the first time in 15 years. We can’t wait to see what local finds are waiting for us in each of the six cities!”

Admission to “Antiques Roadshow” is free, but tickets are required and must be obtained in advance. Fans can apply now for a chance to receive one pair of free tickets per household. To enter the drawing for free tickets to a summer “Roadshow” event and to see complete application rules, go to pbs.org/antiques/tickets. For information, call 888-762-3749.

The deadline for applications is April 18, at 11:59 p.m. PST.

At each appraisal event, approximately 5,000 ticketed guests will receive free valuations of their antiques and collectibles from specialists from the country’s leading auction houses and independent dealers. Each guest is invited to take two items for appraisal.

From each of the six events, three episodes of television per city will be created for inclusion in the show’s 21st season.

The summer tour dates are Orlando, Florida, June 18; Virginia Beach, Virginia, June 25; Indianapolis, Indiana, July 9; Fort Worth, Texas, July 23; Palm Springs, California, Aug. 6; Salt Lake City, Utah, Aug. 13.

“Antiques Roadshow” is produced by WGBH Boston for PBS, and is seen by an average of 8.5 million viewers each week. It is currently airing Mondays at 8 p.m. on PBS.