The first underwater hotel was built in Dubai in 2004 and opened in 2006. It is located 20 meters underneath the ocean surface and is made of metal, glass, plastic, and aluminum. Wealthy people interested in water, fish, and luxury hotels typically visit this relaxing and beautiful hotel, where one night costs $1,500 and it offers many amenities. The document was a project completed by Fernando Relinque Sánchez, Raúl Valdivia García, and Aladino González García.