Guided & commented tours

On Thursday 12 Feb , On Thursday 19 Mar , ... On Tuesday 7 Apr , On Tuesday 12 May , On Thursday 4 Jun , On Thursday 25 Jun , On Thursday 23 Jul , On Thursday 13 Aug , On Thursday 27 Aug , On Tuesday 22 Sep , On Tuesday 13 Oct

On Tuesday 17 Feb , On Tuesday 3 Mar , ... On Tuesday 14 Apr , On Tuesday 28 Apr , On Monday 13 Jul , On Tuesday 28 Jul , On Tuesday 4 Aug , On Tuesday 18 Aug , On Tuesday 20 Oct

On Sunday 15 Feb , On Sunday 19 Apr , ... On Sunday 12 Jul , On Sunday 26 Jul , On Sunday 9 Aug , On Sunday 23 Aug , On Sunday 25 Oct

From 8 February until 25 October

From 12 February until 29 October

On Friday 13 Feb , On Friday 20 Feb , ... On Friday 27 Feb , On Friday 6 Mar , On Friday 10 Apr , On Friday 17 Apr , On Friday 22 May , On Friday 29 May , On Friday 10 Jul , On Friday 17 Jul , On Friday 24 Jul , On Friday 31 Jul , On Friday 7 Aug , On Friday 14 Aug , On Friday 21 Aug , On Friday 28 Aug , On Friday 4 Sep , On Friday 11 Sep , On Friday 18 Sep , On Friday 25 Sep , On Friday 23 Oct , On Friday 30 Oct

From 13 February until 30 October

From 2 January until 30 April , ... From 1 May until 30 October

From 7 February until 28 March , ... From 3 April until 11 September , ... From 2 until 30 October , ... From 31 October until 14 November

From 6 January until 12 December

On Thursday 12 Feb , On Tuesday 17 Feb , ... On Friday 20 Feb , On Tuesday 24 Feb , On Friday 27 Feb , On Saturday 7 Mar , On Thursday 12 Mar , On Wednesday 18 Mar , On Wednesday 25 Mar , On Wednesday 8 Apr , On Monday 13 Apr , On Wednesday 15 Apr , On Friday 17 Apr , On Tuesday 21 Apr , On Thursday 23 Apr , On Wednesday 29 Apr , On Wednesday 13 May , On Wednesday 20 May , On Wednesday 27 May , On Wednesday 3 Jun , On Tuesday 9 Jun , On Tuesday 16 Jun , On Tuesday 23 Jun , On Saturday 27 Jun , On Friday 3 Jul , On Monday 6 Jul , On Friday 10 Jul , On Wednesday 15 Jul , On Friday 17 Jul , On Monday 20 Jul , On Tuesday 21 Jul , On Friday 24 Jul , On Monday 27 Jul , On Friday 31 Jul , On Monday 3 Aug , On Friday 7 Aug , On Monday 10 Aug , On Tuesday 11 Aug , On Friday 14 Aug , On Monday 17 Aug , On Friday 21 Aug , On Wednesday 26 Aug , On Thursday 3 Sep , On Monday 7 Sep , On Wednesday 16 Sep , On Friday 25 Sep , On Wednesday 30 Sep , On Wednesday 7 Oct , On Wednesday 14 Oct , On Monday 19 Oct , On Wednesday 21 Oct , On Friday 23 Oct , On Monday 26 Oct , On Thursday 29 Oct , On Wednesday 4 Nov , On Monday 9 Nov , On Friday 13 Nov , On Wednesday 18 Nov , On Friday 4 Dec , On Friday 18 Dec

From 3 January until 19 December