1) The world's first credit card was introduced in 1950 by Diners Club.

2) The lotus flower is considered a sacred symbol in many cultures and is associated with purity, enlightenment, and rebirth.

3) The word "elephant" contains three vowels: E, A, and E.

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.