Siguldas viduslaiku pils

The widest and tallest cave in the Baltics, in the ancient Gauja valley near Sigulda. It began to form more than 10,000 years ago when post-Ice Age meltwater washed out the sandstone; it is Latvia’s oldest tourist attraction, and inscriptions on its walls date back to the 17th century. The legend of the Rose of Turaida is tied to the cave.

A 44-hectare museum reserve on the Gauja opposite Sigulda: the reconstructed brick castle with its main tower, a wooden church, the memorial to the Rose of Turaida, manor outbuildings and more than 38 displays on the Livs and local history. Open daily all year (9–20 in summer); adults €9.

A once-secret Soviet bunker about 9 m underground, beneath the rehabilitation centre at Līgatne. The tour takes in a diesel power station, air-purification equipment and a communications centre; the café serves a 1980s-style meal, and there’s an “Object X” spy game. Check tour times in advance.