blue metro

183446_fortepan_25643_1971_ferencv_htgy.jpg Construction of blue Metro Line M3 began 50 years ago The development of the Budapest underground network entered a new phase 50 years ago when the construction of the city’s third metro line began. Although the ideas changed a lot and the work planned for 15 years took 20, today’s Metro Line 3 is one of Budapest's most important transport corridors.

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