Paying Homage To Stargate
Location: N 40 42.217 E 5 35.087 Find a working Stargate, tucked into an abandoned missile silo in Porto Darsena. It will whisk you across the map instantly and fans of the original show will appreciate the similarities the wormhole effect has when you load the next area. When you approach the sealed tunnel, you’ll see a row of switches, these can be pressed in sequences that will open the gate. In order from left to right press 1 4 3 4 2 1, the silo will open. Jump in and transport across the map in seconds. Medici is huge, getting around can eat up a lot of time, if you don’t have fast travel available, this is a handy tool to have at your disposal. 
Dark Souls Bonfire
Location: 40 41.215 E 5 35.027 Dark Souls gets a fist bump with this bonfire crafted like the series. You can find it between two giant rock formations in the region of Cauda. Between them, there’s a small body of water with an old rusted boat at the end. The bonfire is across from that boat, press Y to activate the fire. 
Ride The Duck-ski
Location: N 40 46.344 E 5 42.803 Exactly what the title says. A large rubber duck jet-ski is available to ride and it can catch some surprisingly fast speeds. Head over to the region of Val De Mar and scale the beach, look for a bit of yellow in some of the bushes. Walk up and grapple the duck and drag it into the nearby water, hop on and voila! You now have your own duck-ski cruiser to help liberate the great people of the Medici Islands. Viva la revolution! 
Gravity Defying Pogo Stick
Location: N 40 44.322 E 5 38.717 The pogo stick ranks among my top three favorite ways to traverse the enormous map. It never gets old when you dive off a building and see how much air you catch off a bounce. Head to Citate Di Ravello, you’ll find a building across from a Luigi Pizza sign. Grapple to the roof and find a green door, the pogo stick is right beside it. I haven’t attempted to pogo off of a plane but you bet your bottom dollar, I’ll be attempting this in the near future. 
The Unmeltable Mr.Snowman Returns
Location: N 40 45.635 E 5 45.881 Everyone loves a recurring Easter egg. In Just Cause 2 a snowman makes an appearance near a ski resort, the same snowman returns and apparently Rico remembers too, as you walk up to the it he’ll say “So we meet again, Mr.Snowman.” Beyond that, there’s nothing else you can do, you can’t interact with Mr.Snowman but you can bask in the glory of his unmeltable features. 
Click on through to the next page for the final three Just Cause 3 Easter eggs.