Moorish architecture is what brings people to Granada, but the beautiful Mediterranean gardens might be the most memorable thing about the city.
This British estate is still the home of the Duke of Northumberland, but it has also been used as Hogwarts in the first two Harry Potter movies and Brancaster Castle in Downton Abbey.
Walk up the ramparts (alongside Asian elephants!) to take in the carved panels and mirrored ceilings of this sandstone palace.
Even though a big earthquake in 2003 destroyed a lot of the mud-brick building, the UNESCO World Heritage site is slowly being fixed up.
If you haven't heard of the Blarney Stone before, an Irish legend says that kissing the rock makes you a great speaker right away.
This creepy 12th-century fortress in the middle of the Transylvanian countryside is said to have been the setting for Bram Stoker's horror novel Dracula. Today, you can go to the hilltop home of the most well-known vampire in the world.
Egypt's rulers lived in the Islamic fort for 700 years, but now people can visit its three mosques and several palaces.