Question: Leuralla Toy & Railway Museum lie 100 km west of Sydney in a small town in which New South Wales national park?

Context paragraphs:
Mount Hay (New South Wales): Mount Hay, a mountain that is part of the Mt Hay Range of the Blue Mountains Range which is a spur off the Great Dividing Range, is located in the Blue Mountains National Park, New South Wales, Australia.  It is located approximately 100 km west of Sydney and 10 km north of the nearest town, Wentworth Falls.  Mount Hay is approximately 944 m AMSL and is one of several basalt caps located within the UNESCO World Heritage Greater Blue Mountains Area.

Kinchega National Park: The Kinchega National Park is a protected national park that is located in the Far West region of New South Wales, in eastern Australia.  The 44259 ha national park is located approximately 840 km west of Sydney and 111 km south-east of Broken Hill .  The park adjoins the town of Menindee .  The eastern edge of the Kinchega National Park is formed by the Darling River.

Marley Beach: Marley Beach (also known as "Big Marley Beach") is an unpatrolled beach in the upper Royal National Park, on the outskirts of southern Sydney, Australia.  The beach is one of eleven beaches located within the territory of the Royal National Park.  The northernmost major beach in the Royal National Park, Marley is considered by Surf Life Saving Australia as the most hazardous unpatrolled beach in the park, and both surfing and swimming are not advised by both SLSA and the New South Wales National Parks and Wildlife Service.  One of the largest beaches in the Sydney metropolitan area, Marley is also notable for the expansive sand dunes that lie behind the beach, which take up over 130,000 square meters.

Leuralla: Leuralla is a historic house in Leura, a suburb in the City of Blue Mountains local government area 109 km west of Sydney in New South Wales, Australia.  The property is now the home of the Leuralla Toy & Railway Museum.

Mount Solitary: Mount Solitary, a mountain that is part of the Blue Mountains Range, a spur off the Great Dividing Range, is situated within the Blue Mountains National Park, New South Wales, Australia.  Mount Solitary is located approximately 100 km west of Sydney, and a few kilometres south of Katoomba, the main town in the Blue Mountains.

Mount Banks: Mount Banks, a mountain within the Explorers Range of the Blue Mountains Range that is a spur off the Great Dividing Range, is located within the Blue Mountains National Park, approximately 100 km west of Sydney in New South Wales, Australia.  Mount Banks is located 8 km from the nearest residential area, Mount Tomah, has an elevation of 1049 m AMSL, and can be accessed relatively easily via the Bells Line of Road.

Mutawintji National Park: The Mutawintji National Park, formerly the Mootwingee National Park, is a protected national park that is located in the Far West region of New South Wales, in eastern Australia.  The 68912 ha national park is situated approximately 880 km west of Sydney and about 130 km north-east of Broken Hill .

New England National Park: The New England National Park is a protected national park located on the Northern Tablelands in the New England region of New South Wales, Australia.  The 67303 ha park was created in May 1935 and is situated approximately 560 km north of Sydney, and 10 km south of Waterfall Way, just 85 km east of Armidale and 65 km west of Coffs Harbour.  The closest village to New England National Park is Ebor, located 20 km away.

Leura, New South Wales: Leura (postcode: 2780) is a suburb in the City of Blue Mountains local government area that is located 100 km west of the Sydney central business district in New South Wales, Australia.  It is one of the series of small towns stretched along the Main Western railway line and Great Western Highway that bisects the Blue Mountains National Park.  Leura is situated adjacent to Katoomba, the largest centre in the upper mountains, and the two towns merge along Leura's western edge.

Royal National Park railway station: Royal National Park railway station is located in Audley, New South Wales, that serviced travellers to the Royal National Park.  It is the terminus of the Royal National Park railway line, now operated by the Sydney Tramway Museum, although the station platform itself is not usable by the heritage trams operating the service.  It opened in 1886 as a commuter rail station, forming part of the Sydney railway network.  Along with the Royal National Park railway line, it closed in 1991 due to low patronage.  The line and station were acquired by the Sydney Tramway Museum and reopened in May 1993.

Supporting paragraphs: Leuralla Leura, New South Wales
Answer: Blue Mountains National Park