From the heady heights of the Himalayas to the sea-level sights of Ireland, each one of these four far-from-ordinary tours will take you to unexpected places and present unforgettable experiences. British Isles: Shrouded in Mist and MysteryWhat: Winter Britain & IrelandLength: 14 daysWhen: October to February Departs from: LondonWith: Topdeck TravelPrice: Starting at $3,050 (doesnâ??t...