You could probably spend months in France and not see all the UNESCO-listed sights. It is a wonderland of Roman ruins, medieval castles, chateaus, and forts. Fortunately for us, one of the most famous is only a 45" ride away - the Pont du Gard, the biggest aqueduct ever built by the Romans. Still intact after nearly 2000 years, the aqueduct is three levels tall, 50 meters high, and 360 meters long.
The aqueduct was part of a 50km system that brought water from Uzes to Nimes, the most important Roman city in the region, over a course that dropped gently and coursed through rock and on elevated channels, most of which are long gone, except for this glorious aqueduct. To say it is an engineering marvel doesn't begin to do it justice - it is an absolute wonder.
At the Museum exhibit, we learn that those platforms, visible just as the arch begins to curve, were to support the wooden foundations which allowed the masons to maintain consistency in the arches and support the stones until the final center (key) stone was laid in place.
This diagram shows how the aqueduct was constructed, starting at the upper left and finishing on the lower right..
All Roman aqueducts were designed exactly the same and all by military engineers. With this consistency and uniformity, an engineer could supervise multiple aqueduct projects at the same time.
All the stones were quarried nearby but only the arch stones were mortared using a formula (given in the Museum exhibit and developed by Vitruvius) that looks remarkably like the same formula we used when making and finishing our adobe walls in New Mexico!
This is the walkway over the second tier; a once-a-day guided tour takes you across the very top tier (we passed on that as it was a very, very windy day!).
The view from the other side.
In addition to the Museum, there is a botanical garden which includes plants from earliest times, one of which is an olive tree, reputed to be 900 years old (at least that's what we think the French plaque said!)
All this walking, gawking, and learning has given us a healthy appetite so time to tuck into a late lunch!
And the aqueduct spans the Gordon River. . .
The aqueduct was part of a 50km system that brought water from Uzes to Nimes, the most important Roman city in the region, over a course that dropped gently and coursed through rock and on elevated channels, most of which are long gone, except for this glorious aqueduct. To say it is an engineering marvel doesn't begin to do it justice - it is an absolute wonder.
At the Museum exhibit, we learn that those platforms, visible just as the arch begins to curve, were to support the wooden foundations which allowed the masons to maintain consistency in the arches and support the stones until the final center (key) stone was laid in place.
This diagram shows how the aqueduct was constructed, starting at the upper left and finishing on the lower right..
All Roman aqueducts were designed exactly the same and all by military engineers. With this consistency and uniformity, an engineer could supervise multiple aqueduct projects at the same time.
All the stones were quarried nearby but only the arch stones were mortared using a formula (given in the Museum exhibit and developed by Vitruvius) that looks remarkably like the same formula we used when making and finishing our adobe walls in New Mexico!
This is the walkway over the second tier; a once-a-day guided tour takes you across the very top tier (we passed on that as it was a very, very windy day!).
The view from the other side.
In addition to the Museum, there is a botanical garden which includes plants from earliest times, one of which is an olive tree, reputed to be 900 years old (at least that's what we think the French plaque said!)
All this walking, gawking, and learning has given us a healthy appetite so time to tuck into a late lunch!
And the aqueduct spans the Gordon River. . .