The Boy Scouts of America are celebrating their 100th anniversary.

Thousands of scouts from across the country took part in a parade in Washington, D.C., the largest Boy Scout parade in nearly 70 years.

The Scouts are also celebrating this week with their National Jamboree. More than 40,000 scouts and leaders will be attending and activities will range from archery and fishing to robotics.

"Hopefully they take away the experiences they had when they become young men and have sons of their own and hopefully get them involved in the program as  well," Loren Lazer, from Va. Troop 300, said.

The Boys Scout's anniversary is also being marked with a new postage stamp. The 44-cent stamp goes on sale nationwide this week.

Since its founding, The Boy Scouts of America has sought to train youth in responsible citizenship, character development, and self-reliance through participation in a wide range of outdoor activities and educational programs.

BSA is one of the largest youth organizations in the United States, with over four million youth members. More than 110 million Americans have been members since 1910.