Trakai
A historical national park around the island castle of the Grand Dukes — lakes, peninsulas, and the Karaim community's old town.
Trakai Historical National Park, established in 1991, is the odd one out among Lithuania's five — a park whose primary landscape is political memory. Trakai was the early capital of the Grand Duchy of Lithuania, and its red-brick island castle on Lake Galvė, rebuilt from ruin across the twentieth century, is the country's defining silhouette. Around it the park protects a knot of glacial lakes, peninsulas, and forest that made the town defensible in the first place, plus the peninsula castle ruins and the manor park of Užutrakis facing the island across the water.
The town's living heritage is the Karaim: a Turkic-speaking, Karaite-faith community settled here by Grand Duke Vytautas around 1397-98 as castle guards, and still present. Their green- and yellow-painted wooden houses line Karaimų street — each traditionally with three windows: one for God, one for Vytautas, one for the family — alongside the kenesa prayer house and cafés serving kibinai, the crescent meat pastries that have become an unofficial national dish.
What's worth knowing before you go
Trakai is an easy half-day from Vilnius — half an hour by train or bus, then a flat two-kilometre walk along the lakeshore to the castle bridges. Making it a full day is better: rent a rowboat or yacht hour on Galvė, circle the lake path to Užutrakis, and time the castle for late afternoon when the coach groups thin.
The castle museum closes Mondays off-season; the lakes freeze into a skating-and-ice-fishing scene in a proper winter, and the classic postcard — castle over water — belongs to summer evenings. Eat the kibinai hot, on Karaimų street, not by the bus stop.