1) The world's most expensive car is the Bugatti La Voiture Noire, which sold for over $18 million.

2) The strongest natural material known to man is spider silk. It is stronger than steel and more flexible than nylon.

3) The musical "Les Misérables" is one of the longest-running shows in the West End and Broadway, with over 13,000 performances.

4) The Taj Mahal, located in Agra, India, is an iconic mausoleum recognized as a UNESCO World Heritage site. It was built in the 17th century by Emperor Shah Jahan as a testament to his love for his wife and stands as a masterpiece of Mughal architecture and a symbol of India's cultural heritage.