The Treaty of Lisbon or Lisbon Treaty (initially known as the Reform Treaty) is an international agreement which amends the two treaties which form the constitutional basis of the European Union (EU). The Lisbon Treaty was signed by the EU member states on 13 December 2007, and entered into force on 1 December 2009. It amends the Maastricht Treaty (also known as the Treaty on European Union) and the Treaty establishing the European Community (TEC; also known as the Treaty of Rome). In this process, the Rome Treaty was renamed to the Treaty on the Functioning of the European Union (TFEU).

Prominent changes included the move from unanimity to qualified majority voting in several policy areas in the Council of Ministers, a change in calculating such a majority to a new double majority, a more powerful European Parliament forming a bicameral legislature alongside the Council of ministers under the ordinary legislative procedure, a consolidated legal personality for the EU and the creation of a long-term President of the European Council and a High Representative of the Union for Foreign Affairs and Security Policy. The Treaty also made the Union's bill of rights, the Charter of Fundamental Rights, legally binding.

...that Monaco, San Marino, and Vatican City all mint their own euro coins, with their own national symbols on the back, despite not being EU members?

...that Slovenia joined the Euro on January 1, 2007?

Prague is the capital and largest city of the Czech Republic. Situated on the Vltava river in central Bohemia, it is home to approximately 1.2 million people. Since 1992, the historic center of Prague has been included in the UNESCO list of World Heritage Sites. According to Guinness World Records, Prague Castle is the largest ancient castle in the world.

The land where Prague was to be built has been settled since the Paleolithic Age. Several thousands of years ago, there were trade routes connecting southern parts of Europe to northern Europe which passed through this area, following the course of the river. From around 500 BC the Celtic tribe known as the Boii, were the first known inhabitants of this region known by name. The Boii named the region Bohemia and the river Vltava. In between the 6th and 9th centuries AD the Germanic tribe Marcomanni migrated to Bohemia and other Germanic tribes followed during the 5th century AD, but in the 6th century their elites and majority of inhabitants moved to the Danubian area which enabled a Slavic tribe invading from the West, to settle this area. The Czech Slavic tribe came to Bohemia in the 6th century and Forefather Czech became the founder of the Czech nation.