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The Poplar Grove Plantation, also once known as Popular Grove Plant and Refining Company, is a historic building, site and cemetery, the plantation is from the 1820s and the manor house was built in 1884, located in Port Allen in West Baton Rouge Parish, Louisiana, United States. The site served as a sugar plantation worked by enslaved African Americans, starting in the 1820s by James McCalop. Starting in 1903, the site was owned by the Wilkinson family for many generations. The house has been on the list of National Register of Historic Places, since December 14, 1987, for its architectural importance.

The Huey P. Long - O.K. Allen Bridge (locally known as the Old Bridge) is a truss cantilever bridge over the Mississippi River carrying US 190 (Airline Highway) and one rail line between East Baton Rouge Parish, Louisiana and West Baton Rouge Parish, Louisiana. Although the bridge is named after former Louisiana governors Huey P. Long and Oscar K. Allen, it is known locally in the Baton Rouge Area as "the old bridge".It was the only bridge across the Mississippi in Baton Rouge from its opening until April 1968, when the Horace Wilkinson Bridge ("the new bridge") carrying Interstate 10 opened. Until 2011, when the John James Audubon Bridge opened between St. Francisville and New Roads, it was the last bridge crossing the Mississippi before the Natchez-Vidalia Bridge, almost 100 miles to the north.

ExxonMobil's Baton Rouge Refinery in Baton Rouge, Louisiana is the fifth-largest oil refinery in the United States and thirteenth-largest in the world, with an input capacity of 540,000 barrels (86,000 m3) per day as of January 1, 2020. The refinery is the site of the first commercial fluid catalytic cracking plant that began processing at the refinery on May 25, 1942.Standard Oil first erected the refinery in 1909. Today's facility is part of a complex made of nine individual plants across the region. The main plant is located on the east bank of the Mississippi River. There are about 6,300 workers spread across these sites, including 4,000 direct employees (the rest are contractors). In 2013 Genesis Energy LP announced an investment of $125 million to improve ExxonMobil's existing assets in the Baton Rouge area. The investment includes plans to build an 18-mile (29 km), 20-inch (51 cm) diameter crude oil pipeline that connects Genesis Energy's Port Hudson terminal, to ExxonMobil's Baton Rouge refinery. The Baton Rouge refinery's tank farm has a capacity of 540,000 barrel-per-day (bpd).

Aillet House is a historic plantation in Port Allen, Louisiana, USA. It was built circa 1830 with bousillage. It belonged to Jean Dorville Landry, a sugar planter prior to the American Civil War of 1861–1865. It has been listed on the National Register of Historic Places since August 9, 1991. The building was donated to the West Baton Rouge Museum and moved to their campus in Port Allen.

WXOK (1460 AM, "Heaven 95.7") is an urban gospel formatted radio station licensed to Port Allen, Louisiana (where the transmitter is located). The Cumulus Media station broadcasts with a transmitter power of 4,000 watts day and 280 watts night. Its translator K239CX (95.7 FM) broadcasts at 140 watts. Its studios are located in downtown Baton Rouge, Louisiana.

WIBR (1300 AM) was an ESPN Radio affiliated sports talk radio station licensed to Baton Rouge, Louisiana. The station broadcast with power of 5,000 watts day, 1,000 watts night and was owned by Citadel Broadcasting Corporation. Its studios were located downtown and the transmitter tower was in Port Allen, Louisiana.

A statue of Henry Watkins Allen (1962) by Angela Gregory is installed in Port Allen, Louisiana, United States. The memorial is slated for removal, as of July 2020.

On September 8, 1935, United States senator and former Louisiana governor Huey Long was fatally shot at the Louisiana State Capitol in Baton Rouge, Louisiana. Long was an extremely popular and influential politician at the time, and his death eliminated a possible 1936 presidential bid against incumbent Franklin D. Roosevelt. Long was at the capitol to pass a redistricting bill to oust Judge Benjamin Henry Pavy, an opposition state judge. Shortly after passing the bill, Long was ambushed in a hallway by Carl Weiss, Pavy's son-in-law. According to the most widely accepted version of events, Weiss shot Long in the chest, and Long's bodyguards shot Weiss, killing him instantly. There remains some controversy over whether Weiss actually shot Long, with an alternative theory claiming he was shot by his bodyguard(s) by accident during the fight and another was that Weiss instead punched Long, who was then killed in the crossfire when his bodyguards opened fire on Weiss. Long was rushed to the Our Lady of the Lake Regional Medical Center, where emergency surgery failed to stop internal bleeding. He was pronounced dead at 4:10 a.m. on September 10, 31 hours after being shot. Over 200,000 people attended Long's funeral. His remains were buried on the grounds of the Louisiana State Capitol, which he had constructed. A statue of Long by Charles Keck was erected on his grave in 1940. Without Long as its leader, his Share Our Wealth movement collapsed, clearing the way for Roosevelt to be re-elected to the White House in a landslide. Long and Robert F. Kennedy of New York (in 1968) are the only two sitting United States senators to be assassinated.

The Louisiana State Capitol (French: Capitole de l'État de Louisiane) is the seat of government for the U.S. state of Louisiana and is located in downtown Baton Rouge. The capitol houses the chambers for the Louisiana State Legislature, made up of the House of Representatives and the Senate, as well as the office of the Governor of Louisiana. At 450 feet (137 m) tall and with 34 stories, it is the tallest skyscraper in Baton Rouge, the seventh tallest building in Louisiana, and tallest capitol in the United States. It is located on a 27-acre (110,000 m2) tract, which includes the capitol gardens. The Louisiana State Capitol is often thought of as "Huey Long's monument" due to the influence of the former Governor and U.S. Senator in getting the capitol built. The building's construction was completed in 1931. It was listed on the National Register of Historic Places in 1978 and was designated a National Historic Landmark in 1982.

The Pentagon Barracks, also known as the Old United States Barracks, is a complex of buildings located at the corner of State Capitol Drive and River Road in Baton Rouge, Louisiana, in the grounds of the state capitol. The site was used by the Spanish, French, British, Confederate States Army, and United States Army and was part of the short-lived Republic of West Florida. During its use as a military post the site has been visited by such notable figures as Zachary Taylor,Lafayette, Robert E. Lee, George Custer, Jefferson Davis, and Abraham Lincoln.

WPYR (1380 AM) is an American radio station licensed to serve the community of Baton Rouge, Louisiana. The station currently airs a Catholic programming format.

Port Allen is a city in, and the parish seat of, West Baton Rouge Parish, Louisiana, United States. Located on the west bank of the Mississippi River, it is bordered by Interstate 10 and US Highway 190. The population was 4,939 in 2020. It is part of the Baton Rouge metropolitan statistical area. Port Allen is home to the Mississippi Riverfront Development, which provides a panoramic view of the Mississippi River and Baton Rouge, the West Baton Rouge Museum, the City of Port Allen Railroad Depot, Scott's Cemetery, the Port of Greater Baton Rouge, and the Port Allen Lock.