Miami WorldcenterConstruction has officially started on phase one of Miami Worldcenter -- America's second-largest mixed-use urban development -- the biggest building project in Florida and Miami history.

Miami Worldcenter will be the city's new multi-billion dollar, mega-retail, residential, entertainment and transportation complex. It will be built on a 1.1 million square foot terrestrial landscape; spread across six downtown Miami city blocks.

At 27-acres, Miami Worldcenter is second in size only to New York's Hudson Yards development at 28-acres.

The first phase of construction begins with Paramount Miami Worldcenter which will boast the world's largest private amenities deck, which includes resort-style pools, walking paths, gardens, bungalows, tennis courts and even an outdoor soccer field.

Miami Worldcenter will intertwine six other downtown Miami residential and office buildings; a 1,800 room Marriott Marquis and Convention Center and several other hotels.

Miami Worldcenter will also serve as the intermodal hub for the downtown MetroMover and Metrorail elevated transit systems. Adjacent to Miami Worldcenter will be the main terminal of the All Aboard Florida intrastate high-speed railroad. Their Brightline express train will connect Miami, Fort Lauderdale, West Palm Beach, The Space Coast and Orlando.

Miami Worldcenter's completion date is set for 2018. For more information, visit MiamiWorldCenter.com.

Source: Greater Miami Convention & Visitors Bureau