What is the best travel destination to visit during winter and why?

Firstly let me understand, what are your preferences climate wise.

Missing sunshine, warmth, beach adventures, rain forests, underwater life, lazy afternoon on the sun bed, with glass of mojito, wine tasting, temples, new cultures and tribes - Australia, New Zealand, Certain Far Asia countries like Thailand, Malaysia, Combodia, Vietnam, India, Africa - especially South Africa, Namibia, Kenya, Tanzania, South America - Mexico, Peru, Cuba.

Feeling like to dive in a cloud of the snow - skiing, indoor's activities, bars, restaurants, concerts, fireplace- the winter best for you will be in Europe (Swizz/French/Italian mountains, Austrian concerts of classical music, Modern Art museum in Berlin), Japan (for fresh fish lovers, skiing and other winter attractions on Fuji mountain and relax in onsen, to experience something very traditional), to taste the rituals of Chinese New Years. Celebrate with all - Christmas and boxing day in Europe or America (New York with its malls, decors and Cristmas carols gonna impress you for sure).

the best destination to visit in winter time is sandy beach destinations for alot of reasons

• first hotels have low demand so prices is very low it gives you an opportunity to book nice room with low price.
• Second its guaranteed that you will get the best service ever becouse all the stuff have time to give the best service. 
• third you will have the quietest holiday ever as no families and kids always sea and sun

It depnds..

If you are looking for snow, mountains, doing the ski, go to Switzerland, germany, france..

If you're looking for warmth, meeting people, sitting in café in the middle of old Medina go to Spain, Italy Morocco, Egypt...

 If you're looking to spend a hot winter go to places like Pamukalele in Turkey, they have hot waters flowing from white moutain ..

Hope this was helpful

It depends on life style & budget , if they are seeking warmth & meeting others & cultural we can recommend Egypt , Morocco  , Spain or Italy 

londre becouse it is very nice place

Sharm El-Shaikh

It is a city that has many advantages in terms of weather, particularly winter

In addition to natural landscapes in diving or safari

. Innsbruck, Austria Innsbruck is known as the ski and snowboard capital of the world. As the two-time host of the Winter Olympics and covered in internationally recognized alpine resorts, Innsbruck does not disappoint. In addition to tearing up the slopes, visitors can tour the famous Olympic ski jump and other nearby athletic facilities. Innsbruck was also a seat of power for centuries and history buffs will love visiting the royal Hapsburg home and soaking up the city’s beautiful architecture. As if you needed more of a reason to visit, Innsbruck is the home of Swarovski Crystals, and no visit to this city is complete without a tour of their bizarre but beautiful headquarter

cote d'ivoir and turky is very nice contry i think this  pepoel friendly and you give any formation for take best time

Dubai because compare to other countries it's not that too cold.

Cox's Bazar,located at bangladesh, is the best travel destination to visit during winter because the Bay of Bengal remains smooth and cool. Various kinds of birds are seen here in this time.

I really like the Canadian because it just has snow