The Athens-Piraeus Electric Railways, Ηλεκτρικοί Σιδηρόδρομοι Αθηνών-Πειραιώς, was inaugurated on 27 February 1869 in presence of Queen Olga and the Prime Minister Thrasyvoulos Zaimis. It connected the city of Athens with Greece's major port in Piraeus and was gradually converted to full rapid transit operations. Thus, it is one of the oldest metro lines in the world. Bought by the Bank of Industrial Credit, Τράπεζα Βιομηχανικής Πίστεως, in 1874, the line was extended to Omonia Square and now also included an underground section.

The Athens-Piraeus Electric Railways, Ηλεκτρικοί Σιδηρόδρομοι Αθηνών-Πειραιώς, was inaugurated on 27 February 1869 in presence of Queen Olga and the Prime Minister Thrasyvoulos Zaimis. It connected the city of Athens with Greece's major port in Piraeus and was gradually converted to full rapid transit operations. Thus, it is one of the oldest metro lines in the world. Bought by the Bank of Industrial Credit, Τράπεζα Βιομηχανικής Πίστεως, in 1874, the line was extended to Omonia Square and now also included an underground section.

Here: Layout of Omonia Square before construction works began

The Athens-Piraeus Electric Railways, Ηλεκτρικοί Σιδηρόδρομοι Αθηνών-Πειραιώς, was inaugurated on 27 February 1869 in presence of Queen Olga and the Prime Minister Thrasyvoulos Zaimis. It connected the city of Athens with Greece's major port in Piraeus and was gradually converted to full rapid transit operations. Thus, it is one of the oldest metro lines in the world. Bought by the Bank of Industrial Credit, Τράπεζα Βιομηχανικής Πίστεως, in 1874, the line was extended to Omonia Square and now also included an underground section.

Here: New layout of Omonia Square with railway line

The Athens-Piraeus Electric Railways, Ηλεκτρικοί Σιδηρόδρομοι Αθηνών-Πειραιώς, was inaugurated on 27 February 1869 in presence of Queen Olga and the Prime Minister Thrasyvoulos Zaimis. It connected the city of Athens with Greece's major port in Piraeus and was gradually converted to full rapid transit operations. Thus, it is one of the oldest metro lines in the world. Bought by the Bank of Industrial Credit, Τράπεζα Βιομηχανικής Πίστεως, in 1874, the line was extended to Omonia Square and now also included an underground section.

Here: Example of similar railway construction works in Paris, Rue de Rome

The Athens-Piraeus Electric Railways, Ηλεκτρικοί Σιδηρόδρομοι Αθηνών-Πειραιώς, was inaugurated on 27 February 1869 in presence of Queen Olga and the Prime Minister Thrasyvoulos Zaimis. It connected the city of Athens with Greece's major port in Piraeus and was gradually converted to full rapid transit operations. Thus, it is one of the oldest metro lines in the world. Bought by the Bank of Industrial Credit, Τράπεζα Βιομηχανικής Πίστεως, in 1874, the line was extended to Omonia Square and now also included an underground section.

Here: Example of similar railway construction works in Paris, Place de la Nation