Once home to kings and queens, palaces were built not only to act as royal residences, but to project power and prestige. As such, monarchs and emperors vied with one another, commissioning lavish summer homes and assembling exquisite art collections with which to fill their endless halls and royal chambers. Besides the magnificent artworks, the former royal residences also boast gorgeous grounds and gardens, with plenty of fabulous fountains and flowerbeds on display. Due to their significant artistic, cultural and historical value, these beautiful palaces now make for some of the most popular tourist attractions around.