My first impression of Edinburgh involved arriving on a cold, rainy day in November and getting out of the train station to see the castle looming up out of the mist, as if it were coming alive.
The second time I arrived in Edinburgh was during the festival, with crowds of people--the atmosphere is amazing; there is so much to see and do.
The tattoo was inspiring. When the lone piper played, lit on the castle battlements, it sent a chill up my spine. Book early!!!
Quick Tips:
Don't miss the castle - get a guided tour; they are very informative, and if you are lucky, you will get a Scotsman with an accent you can drool over all around the ramparts.
Walk the Royal Mile to get a feel for the Old Town, and then head to the Georgian architecture in the new town down the hill. An inside view of both is available at Gladstone's Land and the Georgian House, respectively. Highly recommended.
Best Way To Get Around:
Most of the sights are in the centre, so walking is a good option. Try and walk the length of the Royal Mile (which runs from the Castle to Hollyrood House) for a real feel of the old city. There are plenty of buses, but be warned: they only take exact change. The most common ticket is 80p. There is an airlink shuttle to the airport from Waverly Bridge for £5 return.