Euro gold and silver commemorative coins are special euro coins minted and issued by member states of the Eurozone, mainly in gold and silver, although other precious metals are also used in rare occasions. Belgium was one of the first twelve countries in the Eurozone that introduced the euro (€) on 1 January 2002. Since then, the Belgian Royal Mint have been minting both normal issues of Belgian euro coins, which are intended for circulation, and commemorative euro coins in gold and silver.

The North–South connection is a railway link of national and international importance through central Brussels, Belgium, that connects the major railway stations in the city. It is line 0 (zero) of the Belgian rail network. With 1200 trains a day, it is the busiest railway line in Belgium and the busiest railway tunnel in the world. It has six tracks and is used for passenger trains, or rarely for a maintenance train when work is to be done on the railway infrastructure inside the North–South connection itself, but not for freight trains. It is partially underground and partially raised above street level.