Basmo fortress was constructed in the 1680s and was abandoned after 62 years of service in 1745. The first mention of this Norwegian fortress is in a letter from Field Marshal Wedel Jarlsberg to the King in 1683. Major General Johan Caspar von Cicignon developed the plans.
During the Great Northern War it was manned by up to 1,350 men. On the night of March 9, 1716, the pyres on the mountaintops announced Swedish King Charles XII and 1,000 men had crossed the border. Moving rapidly, he found the border poorly guarded and moved with cavalry to Høland parsonage. Norwegian troops stationed in the district were assembled by the Basmo commander, Colonel Kruse, who attacked the Swedes in a bloody battle. Charles XII barely escaped capture, but the tide was soon turned against the outnumbered Norwegians, and Kruse, badly wounded, was captured. The Swedes went on to occupy Christiania without resistance on March 21, 1716, but were ultimately repulsed. Basmo was also in the path of invading Swedish troops during Charles XII’s second unsuccessful invasion in 1718.
References:The Amphitheatre of the Three Gauls was part of the federal sanctuary of the three Gauls dedicated to the cult of Rome and Augustus celebrated by the 60 Gallic tribes when they gathered at Lugdunum (Lyon). The amphitheatre was built at the foot of the La Croix-Rousse hill at what was then the confluence of the Rhône and Saône.
Excavations have revealed a basement of three elliptical walls linked by cross-walls and a channel surrounding the oval central arena. The arena was slightly sloped, with the building"s south part supported by a now-vanished vault. The arena"s dimensions are 67,6m by 42m. This phase of the amphitheatre housed games which accompanied the imperial cult, with its low capacity (1,800 seats) being enough for delegations from the 60 Gallic tribes.
The amphitheatre was expanded at the start of the 2nd century. Two galleries were added around the old amphitheatre, raising its width from 25 metres to 105 metres and its capacity to about 20,000 seats. In so doing it made it a building open to the whole population of Lugdunum and its environs.