A host of competition sites are beginning to take shape ahead of next year's official test events. Among them is the Barra Olympic Park, which will boast seven new venues in addition to the existing Rio Olympic Arena and Maria Lenk Aquatics Center.

The Carioca 1, 2 and 3 arenas are in the final stage of mounting pre-moulded concrete structures and roof installations. The venues will host basketball, judo, Greco-Roman wrestling, freestyle wrestling, fencing, taekwondo, wheelchair rugby and boccia.

Meanwhile, grandstand structures at the Olympic Tennis Centre's 10,000-seat centre court are almost finished. Construction is also underway at the 5,000-seat Court 1 and 3,000-seat Court 2. The venue will host tennis and five-a-side football.

The city's mayor Eduardo Paes has admitted that work on the Olympic Velodrome is three weeks behind schedule. But he insists it will be ready on time. Pre-moulded concrete structures are currently being installed while foundation works are in their final stages.

Swifter progress has been made at the Future Arena, which will host handball and goalball. Core pillars are already in place while the installation of roof beams and latticework has also been completed. The 18,000-seat aquatics stadium is currently being fitted with a concrete floor and metal support structures for tribunes. It will host swimming and water polo competitions.

Major strides have been made towards the development of the Olympic golf course in the second half of 2014.With a legal dispute seemingly resolved, work on the project has gained momentum. A topography study of the course has been concluded, as has the dredging of the lakes. Grass was planted in May and the clubhouse foundations are now being built.

In July, work began on the Deodoro Olympic Park, which will host 11 Olympic and four Paralympic events. About 60 percent of the venues are ready due to existing structures built for the 2007 Pan American Games.

Foundation work is underway at the Youth Arena, which will host women basketball and the modern pentathlon fencing section. It will comprise 2,000 permanent and 3,000 temporary seats.

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