The Helsinki Metro, opened in 1982, is the only rapid transit system in Finland.

Korea University Station is a subway station on the Seoul Subway Line 6.

The Monastiraki Metro Station, located on the square, serves both Line 1 and Line 3 of the Athens Metro.

A man playing the violin to a protester in a Kyiv underground passage.

We were at the march in front of the Cedeño subway station.

It is one of the busiest commuter stations in London.

Holland Park is a London Underground station.

The Yokohama Subway, (and the planned Kawasaki Subway) also operate in the Greater Tokyo Area, but they are not directly linked to the Tokyo subway network.

Clashes between thugs and protesters, by Abbassiya metro station.

Hyde Park Corner is a London Underground station near Hyde Park Corner in Hyde Park.

Over 580 million passengers use the Prague Metro every year.

UNICEF s Children of Syria Winter Crisis Appeal ad in a London Subway Dec 2012.

Some users on twitter reported that the underground metro was closed also to control the flow of the protesters.

The church appeared in the last photo has recently created controversy for re routing subway exits for their convenience.

The Shanghai Metro is a rapid transit system in Shanghai, China.

New York City subway passengers are now advised that they might experience random searches of their bags.

The deterioration of relations between China and Soviet Union disrupted subway planning.

Garibaldi is a station on line 13 of the Paris Métro in the commune of Saint Ouen.

So you enter your information. Then, like the London tube system, the little trains go around with what you're thinking about.

Bilbao is a station on Line 1 and Line 4 of the Madrid Metro.

Canal is a station on Line 2 and Line 7 of the Madrid Metro.

Legazpi is a station on Line 3 and Line 6 of the Madrid Metro.

Oporto is a station on Line 5 and Line 6 of the Madrid Metro.

Ventas is a station on Line 2 and Line 5 of the Madrid Metro.

It carried 1.541 billion passengers in 2012, (up from 1.524 billion in 2011), 4.210 million passengers a day.

Mairie de Montrouge is a station of the Paris Métro on line 4 situated in Montrouge.

Liberté is a station on line 8 of the Paris Métro in the commune of Charenton le Pont.

The country s first graphic novel, Metro, was supposed to be a show of free speech and artistic merit.

I'm going to lift my shirt up and show them, (Laughter) and then I think, No, this is the New York City subway, that's going to lead to other things. (Laughter)

Alonso Martínez is a station on Line 4, Line 5 and Line 10 of the Madrid Metro.

Cuatro Caminos is a station on Line 1, Line 2 and Line 6 of the Madrid Metro.

Plaza Elíptica is a station on Line 6 and Line 11 of the Madrid Metro.

San Bernardo is a station on Line 2 and Line 4 of the Madrid Metro.

Ópera is a station on Line 2, Line 5 and Ramal of the Madrid Metro.

The Red Line is one of the two lines on the Dubai Metro network in Dubai, United Arab Emirates.

The Green Line is one of the two lines in the Dubai Metro network in Dubai, United Arab Emirates.

Shenzhen Metro authorities confirmed that the cause of the accident was also similar to the Shenzhen accident on December 14.

Mairie des Lilas is a station of the Paris Métro in the commune of Les Lilas.

Diego de León is a station on Line 4, Line 5 and Line 6 of the Madrid Metro.

Guzmán el Bueno is a station on Line 6 and Line 7 of the Madrid Metro.

Plaza de Castilla is a station on Line 1, Line 9 and Line 10 of the Madrid Metro.

Príncipe de Vergara is a station on Line 2 and Line 9 of the Madrid Metro.

Sainz de Baranda is a station on Line 6 and Line 9 of the Madrid Metro.

Puerta del Sur is a station on Line 10 and Line 12 of the Madrid Metro.

Bay Area Rapid Transit (BART) is a rapid transit system serving the San Francisco Bay Area.