It has been inaugurated with 6,000 seats, but by next year it will have 12,500 , making it the largest of its kind in the world . It is a three-storey bicycle park in Utrech (the Netherlands).
To get an idea of how big it will be, nothing better than watching the following video .
bikes
The enclosure is open and guarded 24 hours a day every day of the year and with the city transport pass card you can park your bicycle for free for the first 24 hours .
One more reason to visit this city on the back of a wheeled metal steed (which can even be electrically assisted). Which maybe even reduces your stress.