1. Nyhavn is a historic 17th-century waterfront area in Copenhagen, Denmark. It is characterized by its colorful houses and cafes along the canal, making it a popular tourist destination. The area was originally a commercial port but has since been transformed into a cultural hub. Famous Danish author Hans Christian Andersen also lived here for a period of time.

2. Nyhavn is open 24/7 for pedestrian access. Specific business hours for restaurants and cafes vary. Phone numbers for individual businesses can be found on their websites.

3. There is no ticket needed for visiting Nyhavn. It is easily accessible by foot, bike, or public transportation. The nearest metro station is Kongens Nytorv, and there are also several bus and waterbus stops in the area. A canal tour is a popular way to see Nyhavn and other landmarks in Copenhagen. Tickets for canal tours can be purchased at various ticket offices in the city or online.