Each year on Memorial Day weekend, many Americans take time to honor the men and women who have fought and died for the United States, from the American Revolution through Iraq and Afghanistan. Many of the nation’s most famous monuments, memorials and cemeteries dedicated to veterans, such as Arlington National Cemetery, the National WWII Memorial and the Vietnam Veterans Memorial, are located in the Washington, D.C., area and have become popular year-round tourist destinations. But the U.S. Department of Veterans Affairs operates 131 national cemeteries, in addition to almost three-dozen other monument sites. The National Park Service maintains more than a dozen other national cemeteries. Here is a look at five interesting but lesser-known sites paying tribute to U.S. veterans.