Devin Castle © Judith Duk
Perched above the confluence of the Morava and Danube Rivers, Devín Castle is one of the most important archaeological sites in Slovakia. The oldest traces of settlement date back to 5,000 BC, and the mighty fortress citadel was impenetrable for centuries until the arrival of Napoleon's troops, who sacked it in 1809. The village of Devín is also quaint and worth visiting, with a number of shops and restaurants. The river, while certainly photogenic, is a hotbed for mosquitoes, so visitors are advised to arm themselves with effective insect repellent.