The phrase "are exhibited over" is correct and usable in written English.
It can be used when describing the display or presentation of items, often in the context of exhibitions or showcases.
Example: "The artworks are exhibited over a period of three months at the gallery."
Alternatives: "are displayed throughout" or "are shown during".
This year, 200 artists are exhibiting over 20 city blocks that border Washington Square Park.
Incoming House Speaker John Boehner heard that some art he didn't like was being exhibited over at the Smithsonian, started squawking about it, and now the art is getting... well, moved to another space in Washington.
The underlying principle is that, in view of the large inter-individual variability of biochemical parameters, for a model to be considered plausible it is not sufficient to reproduce the qualitative behavior of the biological system for just one set of parameter values; instead, this behavior must be exhibited over a nontrivial subset of the parameters space.
This year saw him nominated for the Young Master's Art Prize in London thanks to his highly acclaimed exhibition, Metamorphosis, and his work is exhibited all over the world.
There are more than 1,000 in existence, and they have been exhibited all over the world.
Ken is also an artist and his work has been exhibited all over the world.
Recycling material and harnessing the power of the sun, the artist Roger Ackling, who has died aged 66 from motor neurone disease, used natural resources to make work that was exhibited all over the world.
Since she created it in 1990, Rachel Whiteread's "Ghost," a plaster cast of a living room modeled after the one from her childhood home in North London, has been exhibited all over the world, including New York, at the Museum of Modern Art in 1994.
Schnabel's work has been exhibited all over the world.
Uribe's work has been exhibited all over the U.S. and the world.
