There is nothing like exploring my home country of the United States of America.
A compilation of 50 states, this land is large and incredibly diverse in terms of topography, culture, religion and even language. No matter what region you choose to explore you can have it all in this country: snow adventures, beach vacations, dude ranches, deserts and mountain exploration & urban experiences in some of the biggest cosmopolitan areas in the world.
Gluten free eating is trending in the US right now making this country a great destination for those traveling with family and living the gluten free lifestyle. Knowledge regarding allergies and cross contamination is pretty solid across most of the 50 states if you stick to the populated areas making traveling a bit less stressful.