member, the external gear being carried between the first rotational member and the second rotational member, a plurality of crankshafts having the first insertion portions to be inserted respectively into the plurality of pair of opposed circular grooves for the first rotational member and the second rotational member, and the second insertion portions to be inserted respectively into the plurality of through holes for the external gear, a plurality of pairs of first bearings for holding the first insertion portions of the crankshafts rotatably with respect to the first rotational member and the second rotational member, the first bearings being inserted into the plurality of pairs of opposed circular grooves for the first rotational member and the second rotational member, and a plurality of second bearings for holdingCathedral of Palma: “La Seu”

The cathedral of Palma is called La Seu and it is considered the fourth most beautiful church in the world. The famous Catalan architect Antonio Gaudí said about La Seu that it was “the greatest and most perfect achievement of gothic style in terms of harmony, construction and mechanics”.

After his victory against the Muslims in 1229 King Jaume I wrote in his diary that his wish was to build a church in gratitude. The construction site was chosen as the place where the biggest mosque in the island had been built and the King ordered the placing of the first stone of the Christian cathedral in 1230.

The cathedral is totally built of sandstone blocks or ashlars. The choir in the east part was built