Article Detail Which is Largest library in the world ? Answer: United State Library of Congress, Washington D.C. Similar Questions : 1. Which is Place of heaviest rainfall ? Answer: Mausinram (Meghalaya) 2. Which is the Largest lake of the world ? Answer: Caspian Sea (371,000 sq km) 3. Which is the lightest gas ? Answer: Hydrogen 4. Which is the deepest lake of the world ? Answer: Lake Baikal 5. Which is the highest Plateau ? Answer: Pamir, Tibet 6. Which is the longest River in the World ? Answer: Nile 7. Which is the highest dam in India ? Answer: Tehri Dam on Bhagirathi River in Uttarakhand (Height of 260 metres) Read more from - Longest and Largest