Tantallon Castle is a ruined medieval fortress atop a promontory opposite the Bass Rock, looking out onto the Firth of Forth. It was built in the mid 14th century by William Douglas and was the last medieval curtain wall castle to be constructed in Scotland.
Despite several sieges, Tantallon remained the property of Douglas descendants for much of its history. It was besieged by King James IV in 1491, and again by his successor James V in 1527, when extensive damage was done. Tantallon saw action in the First Bishops' War in 1639, and again during Oliver Cromwell's invasion of Scotland in 1651, when it was once more severely damaged.
Tantallon is a unique construction within Scotland, the defences comprising only a single large wall securing a coastal promontory. The south-east, north-east, and north-west approaches are naturally defended by steep sea cliffs and were only ever protected by relatively small defensive walls. To the southwest, a massive curtain wall blocks off the end of the promontory, which forms the inner courtyard. The curtain wall is built of the local red sandstone and has a tower at each end and a heavily fortified gatehouse in the centre, all of which provided residential accommodation.
The ruin is today in the care of Historic Environment Scotland and open to the public.
References: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.