In Venice, participants at the 16th International Architecture Exhibition are presenting their interpretations of what "freespace" is. Countries like Russia and Argentina are looking to some of their most iconic landmarks, while the US takes to exploring boundaries and borders.

Inside the Giardini, participants at the architecture Biennale generally ask visitors to come into their pavilion to see their exhibitions.

And it seems like Russia has completely transformed its pavilion into a train station. The Station Russia as it had been renamed, explores the past, present and future of Russian railways.

According to the pavilion's Commissioner, railways are the lifeblood of the widespread country, the space of Russia.

SEMYON MIKHAILOVSKY COMMISSIONER OF THE RUSSIAN PAVILION "All the Russian train stations are unique, the atmosphere of train stations, and the trains are changing and we have a lot of famous travellers who travel through Russia, a lot of events happened in the train stations or in trains so we have history, connected with Russian history, trains are connected and of course there is the literature, from Anna Karenina to Doctor Zhivago, from Nicola II to Aleksandr Solzhenitsyn."

To interpret this year's theme "Freespace", Argentina has also used its own landscape.

Architectural projects are exposed on a horizontal line and a visual installation aims to help the visitor understand the Argentinian territory.

PABLO ANZILUTTI CO-CURATOR OF THE ARGENTINIAN PAVILION "We built an object that is an abstract representation of the immensity of the Argentinian territory, and by playing with reflection, mirrors and a moving sky, it tries to create this feeling we often have in Argentina of an infinite sky - a land that never ends and that meeting point on the horizon line that is never ending."

The United States pavilion is, among other things, also trying to challenge the way we envision boundaries. Its room presents a mural-sized visualisation of watersheds or ecological corridors that overlap with the political border between Mexico and the United States.

The 16th International Architecture Biennale Exhibition will run untill November 25 in Venice.