Further on, we visited Al Zubarah fort. It was built somewhere in the 1930's because Qatar and Bahrain had some "turbulent relations". This fort is probably the most complete and best known, and picturesque enough to be used on postcards and book covers.
While most of it is empty, there are displays of findings from the nearby excavations (like the one we went to). There's also an old well - when you peer through the metal grid that closes off its top, you can still see yourself reflected in the water deep below.
For the coolest 360 degree view of this place visit this link: Al Zubara Fort