Dating originally from the mid-16th century but predominantly now the combined work of the city’s most renowned and prolific religious architect Johann Christoph Glaubitz (Jonas Kristupas Glaubicas, ca. 1700-1767) who spent four years on the rococo design between 1749 and 1753 and later 19th-century Neo-Byzantine modifications, the entire ensemble is comprised of the church, a free-standing bell tower, monastery and convent although it’s the church interior that’s of most interest, being positively bursting with frescos, icons, a magnificent cupola and rich blue and green colours. A particular quirk of the church’s crypt saw it being chosen in the middle of the 19th century as the final resting place of the supposedly incorruptible Saints Jonas, Eustachius, and Antanas, couriers of Algirdas whose remains are displayed dressed in white at Christmas, in black during Lent, in red on all other occasions with the exception of June 26 when they’re put on display entirely naked.