Dünyanın ilk yeraltı demiryolu Londra Metropolitan Demiryoluydu. 1863'te açıldı.
- The world's first underground railway was the Metropolitan Railway in London. It opened in 1863.
New York'un Metropolitan Sanat Müzesi aynı zamanda The Met olarak da bilinir.
- New York's Metropolitan Museum of Art is also known as The Met.
The metropolitan area of Lima accounts for 43 per cent of gross domestic product, for four-fifths of bank credit and consumer goods production.