The phrase "a curious event" is correct and usable in written English.
It can be used to describe an occurrence that is unusual or intriguing in nature.
Example: "The sudden appearance of a double rainbow after the storm was certainly a curious event that left everyone in awe."
Alternatives: "an intriguing occurrence" or "a strange happening".
He has his own brand of the fuel, BioWillie, and next week, a curious event is scheduled to to promote it.
It's a curious event – Stewart is preceded by the Corrs, Bryan Adams and a DJ set from Giorgio Moroder (in a backwards baseball cap), that he keeps interrupting with short anecdotes – made even more curious by Stewart's choice of set.
Even by California standards, this was a curious event.
A curious event that kids worldwide can only dream of has been taking place in Armenia for thousands of years: a nationwide water fight where you have free rein to dump water on the nearest friend or stranger without any repercussions.
The meeting is a curious event--partly because Trong is not a head of state but instead the leader of Vietnam's constitutionally-mandated ruling party--but also because Vietnam has done so little in recent months to deserve the reward that is an Oval Office meeting.
Yet for all its splendour and pageantry, the coronation of a British monarch is really a rather curious event.
That left us with a very curious event, awkwardly poised between tribute and piss-take, even condemnation, of the old-school standup with which the Borscht Belt was associated.
According to Komsomolskaya Pravda, which published a picture on its back page of a globe-shaped object said to be a UFO, curious events have been taking place in the Perm region for many months.
Under the direction of Kenny Leon, Mr. Beaty scrambles around a tiered playing space in the guise of dozens of characters drawn to the curious event, delineating each with a subtle change of vocal coloring or physical carriage.
Being in the running for a literary prize is a curious psychic event.
He celebrated his 45th birthday in August 2003 at a curious public event that seemed to underscore the decline of his career.
