Kuala Lumpur is Malaysia's capital and the country's most populous metropolis. It is a modern city with a mix of ancient and new architecture, including the famed Petronas Twin Towers and the Sultan Abdul Samad Building, a British colonial-era landmark. Cultural attractions in Kuala Lumpur include the National Museum, the Islamic Arts Museum, and the Petaling Street Market. The city is situated on the junction of the Klang and Gombak rivers on Peninsular Malaysia's central west coast. It has a tropical environment that is hot and humid all year. Although Malay is the official language of Kuala Lumpur, English is commonly spoken.