Residential Retreats are a type of vacation destination that provide a unique experience for visitors. They are usually located in rural or remote areas and offer a variety of activities such as yoga, meditation, and outdoor activities. The term DENS is an acronym for 'Dwelling Environments for Nature and Serenity', which is a fitting description for these retreats. They provide a peaceful and calming atmosphere for visitors to relax and unwind from the stresses of everyday life.