barcelona

Based on many criteria, market research firm Juniper Reserach has selected the five smartest cities in the world, including Singapore, Barcelona, ​​London, San Francisco and Oslo.

With impressive architecture, tranquil beauty and longevity with time, many pedestrian streets become the must-see destination of tourists.

Seeing tourist cities from above not only helps visitors have a new perspective on familiar sightseeing places, but also sees the unique planning of each place.

17 photos of world wonders from above make everyone admiring praise.

Most of these images were taken by ... Google Earth and shared directly to Instagram with a brief commentary introducing the location taken.

The AirPano team is comprised of adventurous members who take a trip around the world and capture impressive photos from an aerial view.