Madrid
Madrid should be on your list of places to travel.
For Madrid you will find the Royal Castle, museums like El Padro, and Reina Sofia during your travel.
The heritage of Spain during your travel will be remarkable in a place such as Madrid.
You have the Salamanca and Riojo heritage of Spain, offering architecture and older sites for your travels.
Madrid Spain is the capital, which makes it more than exciting to see for travel.
The communications palace in Madrid is one of the most spectacular sites to see for the architecture.
Keep in mind the Roman Empire had a great deal of influence on many areas of Madrid as well.