Fortress Lisse is a military-history site tied to the Metaxas Line and the fighting of World War II in northern Greece. Its bunkers and mountain-border setting make it very different from Drama's urban cafes and tobacco-era architecture.
The site is best for travelers with a specific interest in twentieth-century history or regional borderlands. It is a day-trip lead rather than an essential Drama stop, but the preserved fortifications give the surrounding mountains a sharper historical context.