This week on WGCU TV

. Wednesday, May 20 World War II Behind Closed Doors - Dividing the World (January 1944 to August 1945) — Part 3 - 9 p.m.

Unknown forces were tearing the Alliance apart just as an Allied victory in Europe was in reach.

. Thursday, May 21 Live from Lincoln Center - New York City Ballet's "Romeo & Juliet" - 8 p.m.

"Live from Lincoln Center" joins the New York City Ballet for Peter Martins' interpretation of Prokofiev's "Romeo and Juliet." Featuring music by Prokofiev and Sterling Hyltin as the lead dancer. Peter Martins choreographs.

. Friday, May 22 Untold Stories - Paradise? Or Paradise Lost? The Story of Captiva - 8:30 p.m.

The legendary history of Southwest Florida's famed barrier island — Captiva.

. Saturday, May 23 Austin City Limits - The Dixie Chicks - 11 p.m.

Old favorites and new classics from the group's defiant, triumphant new album, "Taking the Long Way."

. Sunday May 24 National Memorial Day Concert - 8 p.m.

This 20th annual event, co-hosted by Gary Sinise and Joe Mantegna, features a mix of dramatic readings, documentary footage and live musical performances, along with an all-star line-up of dignitaries, actors and musical artists. Broadcast live from the West Lawn of the U.S. Capitol in Washington, D.C., the National Symphony Orchestra performs under the direction of Erich Kunzel to salute American military personnel. PBS Previews: The National Parks - 9:30 p.m.

Get a sneak-peek of the new Ken Burns film, The National Parks: America's Best Idea. The 12-hour, six-part documentary series premieres in September.

. Monday May 25 Antiques Roadshow - Hartford — Hour 3 - 8 p.m.

A 19th-century Duncan Phyfe dressing table and a watercolor signed by Katharine Hepburn.

Hallowed Grounds - 10 p.m.

There are 23 World War I and World War II American military cemeteries overseas. Rare visits to some of these extraordinary places are interwoven with interviews with historians and witnesses to the wars and the creation of the cemeteries.

. Tuesday, May 26 NOVA - Ocean Animal Emergency - 8 p.m.

A San Francisco veterinarian treats sea lions sickened by toxic algae blooms caused by pollutants.

American Masters - Pete Seeger: The Power of Song - 10 p.m.

Everyone from Bob Dylan to the Dixie Chicks help tell the story of the folk artist's career, impact and experiences.

. Wednesday, May 27 Great Performances - In the Heights: Chasing Broadway Dreams - 8 p.m.

In a journey reminiscent of the unexpected zeitgeist success of "Hair," "A Chorus Line" and "Rent," the story behind the success of "In the Heights."