Denny's (aka Denny's Diner as appeare on some of the locations' signage) is the largest full-service diner/family restaurant chain in the United States. It operates over 2,500 restaurants in the United States (including Puerto Rico), Canada, Curaçao, Costa Rica, El Salvador, Japan, Mexico, and New Zealand. Denny's is known for its 24 hours a day, 7 days a week, and 365(1/4) days a year operations, serving breakfast, lunch, dinner, and dessert around the clock. Many of their restaurants are located in proximity to freeway exits and in service areas of small towns and remote areas. Unlike many other restaurant chains, Denny's does not close on holidays or nights, except where required by law.