When you think of national monuments, you probably think of the handful that are best known, the ones that appear on the covers of textbooks and in patriotic YouTube montages. The Lincoln Memorial, Mount Rushmore, the Statue of Liberty—these iconic monuments are embedded in our consciousness as soon as we’re old enough to recite the Pledge of Allegiance in grade school. All over the country, there are other memorials and monuments, some of them commemorating obscure events in history, some of them recognizing natural wonder, and some of them simply overshadowed by iconic memorials to the same period. This Labor Day, let’s take a tour around the country and look at some of the lesser-known landmarks that you may not have heard about in your history books. Here are 10 Unsung National Monuments/Memorials to Visit This Labor Day.