Edinburgh and Glasgow, separated by less than 80km (50 miles), are the primary cities of Scotland and significant metropolises in the United Kingdom, too. Each has an increasingly busy international airport and a city center railway terminal that regularly receives trains traveling north from London, other cities in England, and from places elsewhere in Scotland.
Although Scotland likes to think of itself as a separate country, the central United Kingdom government in London regulates all issues regarding international visitors and immigrants, and the same rules apply to travel to Scotland as to traveling in any part of England, Wales, and Northern Ireland.
Calling Scotland
To call Scotland from the United States, dial the international prefix, 011; then Scotland's country code, 44; then the city code (for example, 131 for Edinburgh and 141 for Glasgow -- minus the initial zero, which is used only if you're dialing from within the United Kingdom); then dial the actual phone number.