- Culebra is a small island municipality located in Puerto Rico. It is situated in the Caribbean Sea, approximately 17 miles east of the mainland. Culebra is known for its beautiful beaches, crystal-clear waters, and vibrant marine life. Flamenco Beach, one of the most popular attractions on the island, is consistently ranked among the best beaches in the world. The city itself is quaint and laid-back, with a small population and a tranquil atmosphere. Tourism is a significant part of Culebra's economy, attracting visitors who seek a peaceful and scenic getaway.