Complex sentence: Avenida de Mayo was inspired by Madrid's Gran Vía; several sources compare this avenue with those of Madrid, Barcelona and Paris due of its sophisticated buildings of art Nouveau, neoclassic and eclectic styles.
Split into simpler sentences: Avenida de Mayo was inspired by Madrid's Gran Vía. The avenue is often compared with those of Madrid, Barcelona and Paris due of its sophisticated buildings of art Nouveau, neoclassic and eclectic styles.