The Gallo-Roman amphitheater in Grand, Vosges, was one of the largest amphitheaters in the Roman Empire with 17,000 seats. Located on the outskirts of the town, the amphitheater was built outside the ramparts of Grand in the 1st century AD. The builders of the day took advantage of the natural slopes of the valley when constructing this semi-elliptical theater. We were able to have a real sense of what the Grand Amphitheater looked like originally as the seating has been constructed over one-half of the original stone supports. The seating has been built to the original dimensions and height so that you have a real sn understanding of the size of the amphitheater.
The amphitheater was built in the was abandoned in the 4th century with the rise of Christianity. The inhabitants of Grand then used the amphitheater as a quarry and for years to come they removed many of the structure’s stones to use for other purposes.
There was also an important sanctuary dedicated to Apollo Grannus, the god of healing. You can still see the remains of the rampart that surrounded the sacred enclosure.
The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.