The renowned Mandarin Oriental Hotel on Brickell Key has been demolished in a controlled implosion, lasting less than 20 seconds, to make way for new luxury towers. Residents and visitors watched as the 23-story building vanished amidst a dust cloud, prompting road closures and an exclusion zone around the area. Preparations for the event included warnings for local residents to stay indoors. The implosion marks the end of an era for the hotel, which had served the Miami community for nearly 30 years.