- Evora Aquaduct
This is the main span of the Evora Aquaduct, outside the city walls. It enters the city by crossing over the wall, just to the left of this photo. - Evora Aquaduct
This is the end of the line for the Evora Aquaduct. At the right of this picture, it's only about shoulder height. - Evora Aquaduct
Evora is a walled city and once the Aquaduct breaches the city perimeter, it's integrated with all manner of houses and shops. It's actually almost easy to overlook it entirely as it's blended so well with the buildings and streets. - Aqueduto Das Aguas Livres
Aquaduct of the Free Waters - This is the Lisbon Aquaduct. It was completed in 1744 which I find interesting because that means it survived the great 1755 earthquake. It's in remarkably good shape and is considered one of the finest examples of 18th century Portuguese engineering. To see it today is pretty cool because of the way the 4 roadways and 2 rail lines snake their way through the arches (the tallest of which is 65 meters). It used to be open for pedestrian traffic, but it was closed due to the large number of suicides and murders (There was even an 'Aquaduct Serial Killer')