<human>: Can you summarize the given text in a few sentences?

I finish my university course next May and I'm looking to take a post-graduation trip with my husband.  We're in our late twenties, based in the UK and want a trip of approximately two weeks in July or August next year.  Our budget is £4k / $6400.  I really want this to be "the adventure of our lifetime" and the ideal trip is a destination outside Europe with some overland travel included. 

Originally the plan was the Trans-Mongolian Express with some time spent in Paris, Beijing, Lhasa and Shanghai but I don't think our timescale really fits as my husband can't get any more than two weeks leave.  Alternatively, I've thought about renting an RV and driving down the West coast of the USA.  Then again, travelling around New Zealand is on both our bucket lists, but possibly too expensive when you factor in flights.  

We love visiting stunning landscapes, learning about the history and the culture of our destination, as well as eating the local food.  We'd like a trip that kept us busy but also had some time to relax here and there.  We're not keen on hostels or dormitories, but we don't need 5* hotels either.  Neither of us like visiting places that are overdeveloped with tourism, but we don't like being the only tourists around either.  

Places either one of us have visited:  Ibiza, La Palma (Canary Islands), Iceland, Maldives, Kos (Greece), NYC, Turkey, Bali, Mexico, Florida, Netherlands, Germany and Cyprus.    

Please help me plan the trip of a lifetime.
<bot>: Couple, late 20s, £4k budget, 2 weeks, July/August 2015, not in Europe, good food, pretty landscapes, decent hotels.