Prague has played an important role in history of its region, its country and Europe since its founding. In the 9th century, Prague was the centre of the Czech state, the seat of princes and kings and since 1918 it has been the seat of presidents of the republic. Its unique historical town offers exceptional examples of all building styles – Roman rotundas and basilicas, Gothic temples, Renaissance palaces, and a vast collection of Prague baroque, Neo-Renaissance and Art Noveau buildings. The historical centre of the capital, shaped by four medieval settlement units of Old Town, New Town, Lesser Town and Hradčany, is the largest city preservation area in the Czech Republic and boasts the largest number of natural cultural sights. It is no wonder that this area was rightfully added to the UNESCO world cultural heritage registry.
Prague used to be called the Head of the Kingdom and this slogan was inscribed on the Old Town Hall in 1526. It is also frequently called the stone, golden, magical or hundred-spired Prague (nowadays you can count over 500 spires in Prague). Like the whole country, Prague is also called the heart of Europe.