Latitude 17° North and Longitude 100° West is located in the Gulf of Mexico, just off the coast of Yucatan Peninsula, Mexico.

Here's why:

* Latitude 17° North runs through the northern parts of the Yucatan Peninsula and across the Gulf of Mexico.

* Longitude 100° West cuts through the Yucatan Peninsula and goes into the Gulf of Mexico.

Therefore, the point where these two coordinates intersect would be in the water, a bit west of the Yucatan Peninsula.