Christian Carrollo's grandfather was an avid traveler.
He documented all of his travels with his camera, which is how Carollo ended up with about 30 boxes of photo slides when his grandfather passed away in 2008.
After rifling through one of the boxes, Carollo came up with the idea of trying to recreate his grandfather's photos during his own travels.
He's calling it the past present project, and has been posting his recreated photos on both Instagram and Facebook.
Keep scrolling to see where's he been so far.
SEE ALSO: A couple has been road tripping across the US for 3 years and took these incredible pictures
FOLLOW US: BI Travel is on Twitter!
Christian Carollo's grandfather loved to travel. Here's his grandfather on Knecht's Covered Bridge in Springtown, Pennsylvania.
http://instagram.com/p/4HJEDmAjP1/embed/
Width: 658px
He documented his travels with his camera, and his wife — Carollo's grandmother, shown here in Yosemite National Park — kept detailed journals from all of the couples' trips.
http://instagram.com/p/7Gtc7rAjC0/embed/
Width: 658px
When Carollo's grandfather passed away in 2008, Carollo's uncle gave him about 30 boxes full of his grandfather's photo slides from his travels between the years of 1973 and 2003. This one is of the Chapel of the Hills near Rapid City, South Dakota.
http://instagram.com/p/4C-cL2gjHJ/embed/
Width: 658px
See the rest of the story at Business Insider
NOW WATCH: If you are from one of these 5 states you may soon need a passport to fly in the United States