Queenstown

New Zealand suspended quarantine-free travel with Australia's Victoria state over a new coronavirus cluster on May 25, the fourth time the trans-Tasman travel bubble has been disrupted since it opened last month.

The Travelers' Choice Award-winning destinations sifted through millions of reviews of grand cities and exciting trip ideas to come up with a list of top 25 destinations for 2015.

1. Marrakech, Morocco
Reviewers pointed to the "magical place" with its markets, gardens, palaces and mosques.

2. Siem Reap, Cambodia

3. Istanbul, Turkey

4. Hanoi, Vietnam