Palazzo Montalto was built in 1397 for Maciotta Mergulese. In the 15th century, the Queen of Aragon gave the palace to Filippo Montalto. It was used as a temporary hospital during a cholera epidemic in 1837, and it was used by the Figlie della Carità in 1854.
The palace is built in Chiaramonte Gothic architecture. Its façade is characterized by a number of mullioned windows decorated with flower motifs. It also has a palline losanghe cornice, similar to the one found at Palazzo Falson in Mdina, Malta.
The portal is topped by an aedicula containing a marble slab with an inscription and the date of construction.
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House of the Blackheads (Melngalvju nams) is a building situated in the old town of Riga. The original building was erected during the first third of the 14th century for the Brotherhood of Blackheads, a guild for unmarried German merchants in Riga. Major works were done in the years 1580 and 1886, adding most of the ornaments.
The structure was bombed to a ruin by the Germans June 28, 1941 and the remains demolished by the Soviets in 1948. The current reconstruction was erected from 1995 to 1999. Today the House of Blackheads serves as a museum and sometimes concert hall.