"A Moving Monument: The West Virginia State Capitol" describes the life and work of the architect and reveals how he created a monument for the people — a masterpiece he hoped would be the crowning achievement of his career.

The documentary travels back to 1921 when the Capitol Building Commission hired Gilbert to build a substantial replacement for a Capitol in Charleston that was destroyed by fire. Viewers learn how a determined Gilbert pushed for the site of the present day Capitol in the East End and took on a massive construction project in the midst of the Great Depression.

Using his magnificent eye for detail and business savvy, he molded tons of marble, limestone and steel into one of the most beautiful capitols in the world. Gilbert successfully pushed for the gilding of the Capitol's grand dome, which bears similarities to the Chapel of St. Louis in the Hotel National des Invalides in Paris.

Despite adding other special touches such as crystal chandeliers and ornate carvings of mythological figures, he managed to stay under budget and built the entire project for a remarkable $9.4 million.

The documentary details some of his other well-known creations such as the Woolworth Building in New York, the U.S. Chamber of Commerce and the Minnesota and Arkansas capitols. It explains the striking similarities that the West Virginia Capitol's design would have on his later work at the U.S. Supreme Court. "A Moving Monument: The West Virginia Capitol" comes full circle with Gilbert.

The documentary informs viewers about his early days, work at the West Virginia Capitol and some of his other notable architectural projects that dot the country. It fast-forwards to the present when Helen Post Curry, Gilbert's great granddaughter, visits the Capitol for the first time and shares observations about her famous relative and the majestic monument he created.