Perched 696 feet (212m) above the confluence of the Morava and Danube Rivers, Devin Castle is one of the most important archaeological sites in Slovakia. The oldest traces of settlement date back to 5,000 BC, and for centuries this mighty fortress citadel was impenetrable, until the arrival of Napoleon's troops, who managed to sack it in 1809. Its image is depicted on postage stamps and Slovakian money. The village of Devin is also quaint and worth visiting, with a number of shops and restaurants. The river, while photogenic, is a haven for mosquitoes, so visitors are advised to arm themselves with effective insect repellent.