Three Brothers is a complex of three adjacent residential houses, the oldest in Riga, representing three different architectural eras. The White House at number 17 dates from the late 15th century, the oldest with a Gothic crow-stepped gable facade. The Yellow House at number 19 was built in 1646 in Dutch Mannerist style. The Green House at number 21 is late 17th century in narrow Baroque style. The building houses the Latvian Museum of Architecture and the National Cultural Heritage Administration. Viewing the facades and the museum are both free