For those in the northern hemisphere, summer officially starts in one week. Have you planned your vacation yet? http://on.natgeo.com/2tnWsL8

For those in the northern hemisphere, summer officially starts in one week. Have you planned your vacation yet? http://on.natgeo.com/2tnWsL8 

https://twitter.com/NatGeoTravel/status/875125775418175493