Āraišu ezerpils

One of the mightiest castles of the Livonian Order, begun around 1213 by the Brothers of the Sword and from 1481 the permanent residence of the Livonian masters. A castle servant leads visitors with lanterns through the Western Tower and the master’s room with its 16th-century star vault; in summer there is a castle garden, craft workshops and multimedia exhibitions in the towers. May–September daily 10–18.

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.

A wooden Baroque manor house built in 1731–1732 for Lieutenant General Balthasar von Campenhausen; the Campenhausen family owned the estate from 1728 to 1939. One of the few such well-preserved 18th-century wooden manor ensembles in Latvia.