Sacrario incompiuto, Military memorial on Col Pion hill in Pinzano al Tagliamento, Italy

The Sacrario incompiuto is an unfinished German military ossuary on Col Pion, near the Pinzano bridge over the Tagliamento. Designed by landscape architect Robert Tischler, it was to hold about 30,000 German and Austrian soldiers of World War I. Its outer facing blocks came from the Somplago quarry in Cavazzo Carnico, the finer interior stone from quarries near Verona; the largest monoliths are columns of about 18 tonnes, roughly 6.4 by 1.4 by 0.8 metres.

The German government chose Col Pion, near the Pinzano bridge, as the site for a mausoleum by landscape architect Robert Tischler to hold about 30,000 German and Austrian soldiers killed in World War I. The design was completed in 1937; in 1938 a full-scale model in wood and reeds was built, and stone construction began the following year. Work stopped after the armistice of 8 September 1943, and the unfinished ossuary was never completed.

The Italian name means 'unfinished shrine', and the site is still called that locally. The German government chose Col Pion partly for its view over the Tagliamento. The mausoleum was designed by landscape architect Robert Tischler and meant to hold about 30,000 German and Austrian soldiers of World War I.

To reach the memorial, visitors need to walk uphill on paths leading to Col Pion. The location rewards the effort with views over the surrounding landscape, so comfortable shoes and time to explore at your own pace are recommended.

Before stone construction began, builders created a full-scale wooden and reed model in 1938 to test how the finished building would look. This temporary structure was later removed but remains documented, showing the care taken in planning the project.