Acting as the seat of the Archbishop of Barcelona, this cathedral was designed and constructed from the thirteenth to fifthteenth centuries. A great piece of history to visit, has geese in the cloister, Santa Eulàlia's Crypt, and stone gargoyle statues.
Also known as Zvjezdan, designed as a key point in the defense of the western fortified entrance of the city and the Pila Gate.
This elegant monument is within the western part of Berlin, it was built due to the orders of the Prussian king Frederick William II around the time of the Batavian Revolution (18th century).
This iconic tower of Paris stands at 1,063 feet and is the tallest structure in Paris. Constructed during the late 1800s and currently has the highest frequency of paid visits in the world.
Construction of the Leaning Tower of Pisa ran from the 12th to the 14th century, but it began to tilt during the 12th century because the support on one side was destabilized because of soft ground. This historical attraction is 183.27 feet tall and weighs 16,000 tons approximately.
The construction process occurred between 72 - 80 AD under the instructions of emperor Vespanian. This colosseum was used for gladiator based events and public spectacles; it had enough seats to house 50,000 - 80,000 spectators.