What are the four Char Dhams and why are they sacred?

The Char Dham (Four Abodes) refers to the four holiest pilgrimage sites in India that, according to Adi Shankaracharya”s 8th century establishment, represent the four directions of the Hindu universe and the four ages of life. The Badrinath (North, Uttarakhand) is dedicated to Lord Vishnu as Badri Narayan, located at 10,279 feet in the Garhwal Himalayas near the source of the Alaknanda River. The Dwarka (West, Gujarat) is Lord Krishna”s kingdom on the Arabian Sea, where he ruled after leaving Mathura. The Puri (East, Odisha) houses the Jagannath Temple with the unique wooden Krishna-Balarama-Subhadra idols and hosts the world-famous Rath Yatra. The Rameswaram (South, Tamil Nadu) is where Lord Rama built the bridge to Lanka and worshipped Lord Shiva as Ramanathaswamy — it is unique as it belongs to both Char Dham and Jyotirlinga lists. Completing all four Char Dhams in one lifetime is considered essential for Moksha according to the Skanda Purana and Padma Purana. Adi Shankaracharya established these four as a unified pilgrimage to bind together the diverse Hindu practices across North, South, East, and West India.