Edinburgh is the capital of Scotland and its second largest city in the United Kingdom. Our time in Edinburgh was short, but we had a chance to walk part of the Royal Mile (the main street through town) and see the castle.
That night we stayed at the Scottish Youth Hostel New Lanark, which is an UNESCO World Heritage Site. http://www.syha.org.uk/hostels-in-scotland/lowlands/new-lanark.aspx