As Istanbul embraces the spooky season with international flair, the Halloween Festival at Kastel promises a night of celebrities, costumes, and cultural fusion – with over 600 already signed up and tickets nearly gone. Istanbul's nightlife is set to transform into a haunted haven on November 2, as the city's largest Halloween event takes over the iconic Kastel venue across three floors. Billed as a celebration where cultures collide, the festival draws partygoers from Turkey