Palacio Real de Madrid
Good to know:
The Palacio Real de Madrid is open from 10am to 8pm in the summer (April to September) and closes two hours earlier during the rest of the year. There are a number of public holidays on which the palace is closed. The tour of the palace's interior takes about 45 minutes and it is recommended to buy the admission ticket in advance to jump the queue. Audio guides are available. You can also download an App in advance, which will save you a few euros. Basic admission is 11 euros. For more information, have a look here.