Canena Castle is a Renaissance building from the 16th century, designed by the Spanish Renaissance architect Andrés de Vandelvira (1509-c. 1575). It belonged to Francisco de los Cobos, private secretary to Charles I and a great patron of the Renaissance in Úbeda and the surrounding area.
The building we see today dates from the 17th century. It adopts an almost square ground plan delimited by two large towers at the ends of the main façade and two smaller and apparently incomplete towers on the rear façade, all them circular. One of the most imposing features is the square keep, which used to be surrounded by a moat, now filled in, and accessed by a drawbridge.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.