The National Trails System includes over a thousand trails throughout the United States, and is administered by the federal government as part of the United...

National Park System incorporates hundreds of units spread across every state in the union as well as several U.S. territories. National Park System units are...

Electrical systems around the world differ in voltage and, less critically, frequency. Plugs and sockets also vary and it might be physically impossible...

Sweden Solar System is the world's largest permanent scale model of the Solar system on the scale 1 to 20 million. The inner bodies can be found in and...

rating systems purport to evaluate restaurants, hotels and travel accommodation in individual countries or worldwide. The value of these systems, much...

world use the metric system, officially known as the International System of Units (SI). Before the introduction of the metric system, there was no worldwide...

Not to be confused with the United States National Park System, which also operates National Monuments, historic sites, etc. There are 63 national parks...

The Alaska Marine Highway (AMH) or the Alaska Marine Highway System (AMHS) are a network of ferry lines connecting destinations along the southern coast...

conservation areas with the Australian National Reserve System (commonly abbreviated as NRS) being a system that makes up Australia's national parks and reserves...

simple systems that will suit many travellers in the main travel photography article. This article gives suggestions for a more elaborate system based...

The Arapeen ATV Trail System is a great family trail with plenty of advanced sections for experienced riders. The trail system ascends from 6,000 to 10...

rail transportation systems which are an attraction in their own right, See urban rail adventures. Public transportation is a system of scheduled passenger...

transport to get around the town, perhaps also to show how the local transport system works. Bus and streetcar tours can be an alternative to regular public transportation...

This article lists scenic areas in the United States National Park System: national preserves, national recreation areas, national seashores, national...

the automobile, commercial air travel, and later the interstate highway system, people traveled by train less and less. This led the private rail companies...

Kashrut is the system of Jewish dietary laws. Food permitted under Kashrut is called kosher. There are only a few major rules of kashrut, but they have...

see Great Lakes (disambiguation). The Great Lakes are an important water system of North America for transportation, commerce, and recreation; they lie...

with the system and used for payment. A separate bike share system is also available in Long Beach. There are also several scooter sharing systems present...

equivalents Canada's official measurement system is metric, but many Anglophone Canadians still use the imperial system for many things in colloquial usage...

military and scientific usage, the United States does not use the metric system, instead retaining its own customary units. This means that road distances...