The Netherlands, informally Holland, is a country located in Northwestern Europe with overseas territories in the Caribbean. It is the largest of four constituent countries of the Kingdom of the Netherlands. The Netherlands consists of twelve provinces. Amsterdam is the country's most populous city and the nominal capital. It had a population of 17.7 million people in 2021.

Utrecht is the fourth largest city in the Netherlands, and the capital and most populous city of the Utrecht province. As of January 2026, the city's population was 378,140. The canals are bustling with kayaks and small boats, festivals take place almost every weekend, and long summer days are spent relaxing on terraces.

The North Caves Maastricht Underground lie deep within the St Pietersberg hills and hold a unique piece of Maastricht's history. They are a collection of limestone quarries in Maastricht, Netherlands, dating back to the 13th century. Originally, the North Caves were excavated for chalk. In total, a network of 20,000 tunnels was carved into the rock, of which 8,000 remain intact.