How do you get to the viking armor on Time Tangled Island?

You need the glider wings from Leonardo da vinci (1516 AD) to reach the Viking suit, on a high hill to the right at 831 AD. (Climb to the upper left of the Statue of Liberty in 1882 AD, then jump left to reach the ledge and Da Vinci's lost notebook.)

Put on the Glider Wings and climb to the rocked-up cave (inside is the Greek's Golden Vase). Move to the right as far as possible and jump straight up. Glide to the right to reach the top of the hill where the armor is.