Plasencia City Walls were built in the late 12th century by Alfonso VIII of Castile, who founded Plasencia to protect his western border. The original perimeter was around 2.4 kilometers long. Towers with semicircular floors reinforced the walls and 26 of the original towers are still preserved. To visit the Wall of Plasencia visitors must stroll through the center of the old city and pass through any of the eight existing doors, gates and wickets. A walks through the barbican is an experience to enjoy.
The stone church of Gamla Uppsala, built over the pagan temple, dates from the early 12th century. Due to fire and renovations, the present church is only a remnant of the original cathedral.
Before the arrival of Christianity in Sweden, Gamla Uppsala was the seat of Swedish kings and a ceremonial site known all over northern Europe. The settlement was home to royal palaces, a royal burial ground, and a great pagan temple. The Uppsala temple, which was described in detail by Adam of Bremen in the 1070s, housed wooden statues of the Norse gods Odin, Thor and Freyr. A golden chain hung across its gables and the inside was richly decorated with gold. The temple had priests, who sacrificed to the gods according to the needs of the people.
The first Christian cathedral was probably built in the 11th century, but finished in the 12th century. The stone building may have been preceded by a wooden church and probably by the large pagan temple.