Melissani Cave is a stunning natural wonder located on the island of Kefalonia in Greece. The cave is famous for its crystal-clear waters, which reflect the sun and create a beautiful, dreamlike atmosphere. Visitors to the cave can take a boat tour through the main chamber and admire the mesmerizing light effects that are created as the sun shines through the cave's roof.

The Melissani Cave is believed to have formed more than 20,000 years ago and is thought to have been used as a place of worship in ancient times. The cave's name, Melissani, is derived from the Greek word "melissa," which means "bee," and refers to the honey-like color of the waters in the cave.

Today, the Melissani Cave is a popular tourist destination, attracting thousands of visitors each year. The cave's tranquil waters and ethereal beauty make it a must-visit destination for anyone visiting Kefalonia or Greece more broadly.