Largest sailing vessel ever

-SS Great Eastern-

The world's largest sailing vessel was SS Great Eastern designed by Isambard Kingdom Brunel and built in 1858 on the Thames River, England. 
Iron sailing steam ship was intended for the passenger and cargo trade between England and Ceylon.
 
General Characteristics
Tonnage: 18,915 GT
Length:    211 m (692 ft)
Beam:      25 m (692 ft)
Capacity: 4,000 passengers
Speed:     14 knots (26 km/h)

SS Great Eastern was by far the largest ship ever built at the time of her 1858 launch, and had the capacity to carry 4,000 passengers around the world without refuelling.
She was so far ahead of contemporary commercial requirements, and industrial capabilities, that her length (nearly 700 feet) and tonnage would remain unmatched for four more decades.
Great Eastern was laid up at Milford Haven, Wales in 1874. In 1886 she steamed to Liverpool to become an exhibition ship. This prosaic, but profitable employment continued during visits to London and Scotland later in the year. 
Sold late in 1887, Great Eastern went back to Liverpool, where she was stripped and slowly broken up during 1888 and 1889.