starts sweating quick what hasn't already been guessed yet?

Lumbermill
Factory
Toy Shop
Military Base
Golf Course
Country House
Shack
Hovel
Office Building
Dam
Power Plant
Crematorium
Boiler Room
Ice Berg
Swamp
Swamp House
Tomb
Egyptian Tomb
Mayan Tomb
Pyramid
Ok I'm getting far afield here :)
ISP Building
Phone Company