El poble espanyol

The Poble Espanyol "Spanish Town" is an open-air architectural museum, located on the mountain of Montjuïc, in the city of Barcelona, Spain.
It was constructed in 1929, for the Barcelona International Exhibition, that was held in Barcelona that year.
Josep Puig i Cadafalch had the idea for the museum: a town in which the architecture, style, and culture of various locations from around Spain were preserved in a single place. The aim was to produce an "ideal model" Spanish village, a synthesis of monumental Spain. The architects that designed the town were Francesc Folguera and Ramon Reventós. In total, the town was built in 13 months, and although it was only needed for 6, for the exhibition, it was not demolished and was kept open as a museum.
The museum occupies a total area of 42,000 m2 and contains 117 buildings, with streets and squares reproduced to scale.

Acceleration

Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to measure the sensitivity of digital imaging systems.

Relatively insensitive film, with a correspondingly lower speed index, requires more exposure to light to produce the same image density as a more sensitive film, and is thus commonly termed a slow film. Highly sensitive films are correspondingly termed fast films. In both digital and film photography, the reduction of exposure corresponding to use of higher sensitivities generally leads to reduced image quality (via coarser film grain or higher image noise of other types). 

In short, the higher the sensitivity, the grainier the image will be. Ultimately sensitivity is limited by the quantum efficiency of the film or sensor.