Monastiraki (Greek: Μοναστηράκι, lit. 'Little Monastery') is an interchange station on the Athens Metro, between Lines 1 and 3. The original surface station on Line 1 opened on 17 May 1895. It became an interchange point of the network when the underground station of Line 3 opened on 22 April 2003. It is located in the historic center of Athens, near the neighborhood of Plaka. The station is right beneath the Acropolis and next to the site of the Ancient Agora of Athens.

Monastiraki opened as Monastirion (Greek: Μοναστήριον, lit. 'Monastery' in Katharevousa) on 17 May 1895 and Line 3 station followed over a century later, on 22 April 2003. The line 1 station was renovated ahead of the 2004 Summer Olympics. Along with Perissos it was the last Line 1 station to be renovated and opened on 10 August 2004, just three days before the games began. Signage for the former name remains in place on the Line 1 platforms, although new signage was added after the 2004 renovation.

The platforms are located on a curve on a north-west axis. This curve is the main factor contributing in the characteristic gap that is formed between the train and the platform. The station is sub-surface, half underground and half in an open-cut. The station is located between two tunnels, a small one on the west and the large Attiki-Monastiraki tunnel in the north. About 1/3 of the platform walls' surface is decorated with gray square tiles. The rest of the walls are painted white and are decorated with characteristic circular lamps. The west end of each platform has an emergency exit that leads to Adrianou street. The open-cut part of the platforms is covered by two roofs, one covering each platform. Each roof is supported on multiple green Ionic iron columns located on both platform's edges. The underground part, located underneath the station's building, is covered by a ceiling supported by concrete arches, iron beams and green Doric iron columns. The columns here are located between the train tracks instead of the platform's edge. The ceiling is similar to that found on several sub-surface stations of the Paris Métro. Three pathways lead to the Line 3 platforms: one on the southbound platform and another two on the northbound. An additional pathway leads from the northbound platform to a specially-built space were antiquities are exhibited. Two staircases, one on each platform, lead to a small balcony on the back of the station's building from where both the platforms are visible. Line 1's concourse level, essentially the old station's building, is located on Monasriraki square and has multiple arched exits. It is built in Neoclassical style and has a tiled roof. The ceiling is covered with artwork by Leda Papaconstantinou. A staircase that leads to Line 3 also exists on the concourse level. The concourse level contains several ticket-vending machines, an ATM and a coffee shop.

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  Line 1 platforms
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  Line 1 platforms as seen from above
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  Line 1 concourse level
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  Line 1 platform sign
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  Line 1 old platform sign

The station has two entrances on ground level. One is located on Monastiraki square, inside the old station building, and the other is located under a building between Athinas and Themidos Street. Both entrances lead to the concourse level, which is somewhat rectangular with four pathways, one on each side, and an elevator leading to the platforms in the middle. Of the four pathways, two lead to the platforms, one leads to Athinas street exit, while the fourth leads to Line 1's platforms and the Monastiraki square exit. The station has two island platforms, which are noteworthy for being the longest in the whole metro network. The floor, as in every Line 2 and Line 3 station, has granite tiles, the walls are made of concrete, while the ceiling is colored dark gray.

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  Line 3 platforms
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  Line 3 concourse level
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  Line 3 platform sign

Exit	Location	Image	Accessibility	Coordinates
	Monastiraki Sq.			37°58′34″N 23°43′32″E / 37.976109°N 23.725691°E / 37.976109; 23.725691
	Athinas Str.			37°58′37″N 23°43′34″E / 37.977015°N 23.726103°E / 37.977015; 23.726103
	Themidos Str.			37°58′37″N 23°43′33″E / 37.977049°N 23.725826°E / 37.977049; 23.725826

As expected due to the station's location, multiple parts of ancient Athens were found during line 3 station's construction. These included, among others, the covered riverbed of Eridanos which is visible behind the northbound line 1 platform. The ceiling of line 1's concourse level is covered by "The World in my Hands" by Leda Papaconstantinou. The artwork consists of 324 separate plexiglass pieces that together cover an area of 134 sq. m.

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  The covered riverbed of Eridanos
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  The World in my Hands by Leda Papaconstantinou
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  Ancient Athenian buildings discovered during Line 3 station's excavation

• Monastiraki
• Hadrian's Library
• Roman Agora
• Stoa of Attalos
• Ancient Agora
• Tzistarakis Mosque
• Kapnikarea

Ground/Concourse G/C	Customer service	Tickets Exits
Level L1	Side platform, doors will open on the right
	Platform 1	← towards Piraeus (Thiseio)
	Platform 2	→ towards Kifissia (Omonoia) →
	Side platform, doors will open on the right
Level L2	Shops	Stores - ATMs
Level L3	Shops	Charity bazaars
Level L4	Platform 3	← towards Dimotiko Theatro (Kerameikos)
	Island platform, doors will open on the left
	Platform 4	→ towards Athens Airport (Syntagma) →

• Media related to Monastiraki metro station at Wikimedia Commons