The problem with this castle comparing to others like Tower of London is lack of furniture, objects, lack of atmosphere....So many things to listen through Audio Guide or read the panels and little to actually see it...
That's too pricey for little thing to see...

As others have said it is expensive and the lines can be AWFUL! But it is a must see in edinburgh that everyone should go to. I loved the history behind it and going inside the royal apartments and seeing the Scottish crown jewels. There is a lot of ground to cover so put aside a large chunk of your day if you are going here, and wear comfortable shoes.

It's expensive. My only complaint.

The view is excellent. We took a tour and learned about some of the history of the castle and the area. It was very interesting.

You will need more than one visit to see the whole thing.

For the ancient history junkies amongst you, it would appear that the first references to the Castle appeared around AD 600 in the Brythonic (i.e. ancient Kings / Queens of Britain) epic Y Gododdin. Therein lies a reference to Din Eidyn, "the stronghold of Eidyn". Y Gododdin is an epic poem is about King Mynyddog Mwynfawr and his band of warriors who, after a year of feasting in their fortress, set out to do battle with the Angles in what is now Yorkshire (apparently). However, in what turned out to be a historically common theme through the ages (see, for example, what happened at Culloden and Cromdale), despite glorious deeds of valour they were massacred. From about 1296 to some point in the 1750s, various rulers and others have built or torn down various of the structures that make up the Castle today - with one notable exception being St. Margaret's Chapel. The Chapel is the oldest surviving building within the castle complex and Edinburgh and is (apparently) is a fine example of Norman architecture. I say apparently because, due to a wedding party, I couldn’t get a look in (some people have no regard to tourists visiting from half way around the world !). The Castle is also home to the Scottish War Memorial and also to the Honours of Scotland (in the Royal Palace Building). The Honours consist of the Crown of Scotland, the sceptre and the sword of state. But perhaps more precious than those is the Stone of Destiny (a.k.a the Stone of Scone (pronounced 'scoon') ) upon which, it has been said, the Kings and Queens of Scotland have been crowned. It took 700 years for the Stone to be returned to Scotland having spent most of its time away in the Coronation Chair at Westminster Abbey. Since 1996, the Scots have got it back but on the understanding that, should a coronation take place, the Stone will be sent to London for five days (and five days only) to allow it to be placed under the Coronation Chair. Interestingly enough, the Castle is still a working military base and is home to, amongst other units, the Royal Scots Dragoon Guards (Carabiniers and Greys - the oldest surviving Cavalry Regiment of the Line in the British Army) although, as the SCOTS DG are a heavy armoured cavalry regiment, the Challenger tanks that they use are appropriately stationed in Germany at the present time. Speaking of military pomp and
circumstance, yes, I saw and heard the gun go off at one o'clock precisely. Travel tip: buy your Fast Track tickets online. Saves time queuing up for tickets particularly at peak times.