Question: This New Hampshire park, which originally opened as a trolley park with botanical gardens and is run by a few local families, is located in which town that has about a population of 29,000 as of 2010?

Context paragraphs:
Beaumont Botanical Gardens: The Beaumont Botanical Gardens (23.5 acres), also known as the Tyrrell Park Botanical Gardens, includes botanical gardens and the 10,000 sq ft "Warren Loose" "conservatory".  The gardens are located in 500 acre Tyrrell Park at 6088 Babe Zaharias Drive, Beaumont, Texas, USA.  An extra benefit is that the gardens are located in a migratory bird flyway.  Tyrrell Park is listed on the Great Texas Coastal Birding Trail map.

Birmingham Botanical Gardens (United States): The Birmingham Botanical Gardens is 67.5 acre of botanical gardens located adjacent to Lane Park at the southern foot of Red Mountain in Birmingham, Alabama.  The gardens are home to over 12,000 different types of plants, 25 unique gardens, more than 30 works of original outdoor sculpture, and several miles of walking paths.  With more than 350,000 annual visitors, the Birmingham Botanical Gardens qualify as one of Alabama's top free-admittance tourist attractions.

Australian Inland Botanic Gardens: The Australian Inland Botanic Gardens (AIBG; previously: Sunraysia Oasis Botanical Gardens) is a botanical garden in the Australian state of New South Wales located within The Mallee and the Sunraysia regions.  It is located on River Road in Wentworth Shire's Mourquong 5 km northwest of Buronga.  The regional city of Mildura, Victoria is located nearby, across the Mildura/Buronga George Chaffey Bridge.  AIBG is the Southern Hemisphere's first semi-arid botanical gardens.  Its specialization in arid-adapted species is unique among New South Wales and Victoria botanic gardens.

Humboldt Botanical Gardens: The Humboldt Botanical Gardens (18 ha / 44.5 acres) are located at the southern edge of Eureka, California, United States.  The Gardens are placed near the South Bay portion of Humboldt Bay directly across Tompkins Hill Road from College of the Redwoods.  Grading and site preparation for the Gardens began in August 2003.  The garden opened in 2006, with more development completed by 2008.  The Humboldt Botanical Gardens offices are located in Downtown Eureka.

Canobie Lake Park: Canobie Lake Park is an amusement park in Salem, New Hampshire.  Originally opening as a trolley park on the shore of Canobie Lake on 1902, the park most prominently featured botanical gardens.  The park declined in popularity after the automobile became the most popular mode of travel in the United States, but three local families now run the park, which draws visitors from throughout the New England region.

Boerner Botanical Gardens: Boerner Botanical Gardens are botanical gardens located on the grounds of Whitnall Park in the village of Hales Corners, Milwaukee County, Wisconsin.  The gardens are named for Alfred Boerner, who designed the original five formal gardens.  The Annual, Perennial, Rock, Rose and Peony Gardens were constructed in the 1930s.  Later additions included trial, herb, lily and shrub rose gardens, as well as the Bog Walk.

Salem, New Hampshire: Salem is a town in Rockingham County, New Hampshire, United States.  The population was 28,776 at the 2010 census.  Salem is a marketing and distributing center north of Boston, with a major amusement attraction, Canobie Lake Park, and a large shopping mall, the Mall at Rockingham Park.

St. Lucia Botanical Gardens: St. Lucia Botanical Gardens, also known as the Diamond Botanical Gardens, is home of the Diamond Waterfall and the oldest botanical gardens on the island of St. Lucia.  The botanical garden is located in the town of Soufrière, in the South-Western region of the island St. Lucia.

Wahiawa Botanical Garden: The Wahiawa Botanical Garden, 27 acre is a botanical garden on a high plateau in central Oʻ ahu, Hawaiʻ i, United States, located between the Wai'anae and Ko'olau mountain ranges.  It is one of the Honolulu Botanical Gardens, and home to a collection of tropical flora requiring a relatively cool environment, with emphasis on native Hawaiian plants.  It is nicknamed the "tropical jewel" of the Botanical Gardens.  The Garden's site began in the 1920s, when the Hawaiian Sugar Planters' Association leased land from the State of Hawaiʻ i for experimental tree planting.  Most of the Garden's large trees date from that era.  The property was transferred to Honolulu in 1950, and opened as a botanical garden in 1957.  It is open seven days a week, from 9am to 4 pm.

Metropolitan Zoological Park and Museum District: The Metropolitan Zoological Park and Museum District or ZMD is a cultural tax district in St. Louis City and St. Louis County, Missouri.  The district has five subdistricts, these being the St. Louis Art Museum, St. Louis Zoo, St. Louis Science Center, Missouri History Museum, and Missouri Botanical Garden.  Of these, all but the Botanical Gardens are located in or near Forest Park.  The subsidies provided by the district ensures that the institutions are public non-profits with free admission for all, with the exception of the Botanical Gardens, which charges a nominal admission fee.

Supporting paragraphs: Canobie Lake Park Salem, New Hampshire
Answer: Salem