The central corridor is the most densely-populated part of Scotland, and it is the most popular with tourists as well. On the western end you have Glasgow, located on the River Clyde. On the eastern end, there is Edinburgh, situated south of the Firth of Forth. The cities and towns of Central Scotland and The Lothians must be explored if you have extra days in the area; we definitely recommend Perth, Stirling, and Loch Lomond, just for starters!
Another area popular with tourists is the Scottish Highlands, known for its strong Gaelic cultural traditions, and its natural beauty, where mountains cascade down to lochs (lakes) and valleys. The capital is Inverness, with its beautiful historic center; after setting aside time to explore Inverness, tourists typically visit such sights in the Highlands as the Cairngorm Mountains, Loch Ness, Fort William, and Ullapool, among other locales.
While you are in the Highlands, consider exploring further afield and visiting the beautiful cities of Aberdeen and Dundee, or perhaps a day trip to the Isle of Skye, in the Inner Hebrides just off the northwestern coast near Kyle of Lochalsh. If you are en route to England at the end of your Scotland adventure and traveling by car, consider driving through Southern Scotland, where the picturesque Scottish Border region and Dumfries and Galloway are located.