Þingvellir National Park is a historical site in Iceland. It is where Parliament (Alþingi) was established in 930 and remained there until 1798. In 2004 it became a World Heritage Site. The postcard was postmarked in Reykjavík. Thanks to Hjalti.
The stamp on the left represents The door of Valþjófsstaðir, a medieval (13th century) carved church door. The stamp was issued in 2010 and has a face value of 10 Icelandic Króna.
The stamp on the right was issued also in 2010 and features a harp seal. It has a value of 220 Icelandic Króna.
Ancient Thracia, Bulgaria
Thracia was a former province of the Roman Empire, established in AD 46. The 2 pictures from the top of the card are both UNESCO World Heritage Sites, the one on the left is the Thracian Tomb of Kazanlak, protected sincw 1979 and on the right is the Thracian Tomb of Sveshtari. Both tombs predate the IV & III centuries BC.
Itchan Kala, Khiva, Uzbekistan
Itchan Kala is the walled inner town of the city of Khiva. It was declared UNESCO World Heritage Site in 1991. There are several gates to access the walled city. The Ata gate is featured in this card. The old town has houses from the 18th – 19th centuries. The city of Khiva is near the border with Turkemistan and is has a population of around 50 000.
The National Congress of Brazil
This building is located in Brasilia and is a UNESCO World Heritage Site. The semi-sphere on the left houses the Senate and the semi-sphere on the right is the seat of the Chamber of Deputies. Thanks to Bruno for the card.