In general, all the places in Spain are secure. However, as in other places, you must be careful with pickpockets in Madrid and Barcelona, especially in turistic crowded places and public transportation (bus and metro).
Madrid:
Visit museums (El Prado, Reina Sofia & Thisen, all of them very near one of each other). Go walking from these museums through El paseo del prado and Castellana tow
Forum:
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