Search by name or browse by location through this professor's database of more than 1,100 photos of prehistoric structures from around the world.

Stone monument fan posits the theory that the megalithic structures of the prehistoric world were meant as protection against the rising seas.

Architectural rendering firm offers these QuickTime animated videos of megalithic dolmens and menhirs throughout Portugal.

Provides an overview of these enigmatic stone monuments that people the European countryside and a large assortment of spectacular photographs.