Susquehanna River National Wildlife Refuge

Fishing Battery Light was the last lighthouse constructed in Maryland by John Donahoo. While still standing, it has been supplanted by a steel tower which stands adjacent to it.

The Ballistic Research Laboratory (BRL) was a leading U.S. Army research establishment situated at Aberdeen Proving Ground, Maryland that specialized in ballistics (interior, exterior, and terminal) as well as vulnerability and lethality analysis. BRL served as a major Army center for research and development in technologies related to weapon phenomena, armor, electronic devices, and high-speed computing. In 1992, BRL was disestablished and its mission, personnel, and facilities were incorporated into the newly created Army Research Laboratory (ARL).BRL is perhaps best known for commissioning the creation of ENIAC, the first electronic general-purpose digital computer.

Spesutie Island is a 1,500-acre (610 ha) island located in the Chesapeake Bay in Harford County, Maryland, United States. It lies 5.5 miles (8.9 km) southeast of Aberdeen, Maryland. Spesutie Narrows bounds the island on the west and the bay bounds it on the north, east, and south. The island is part of Aberdeen Proving Ground.

The Havre de Grace Racetrack was an American horse racing track on Post Road in Havre de Grace, Harford County, Maryland. Nicknamed "The Graw," it operated from August 24, 1912, to 1950. For a time, it was owned by the Harford Agricultural and Breeders Association and also by the notorious gambler Arnold Rothstein. The Havre de Grace Handicap was one of the important races in the American northeast for many years. Its winners include U.S. Racing Hall of Fame inductees Roamer, Crusader, Seabiscuit, Sun Beau, Equipoise, and Challedon. Some Hall of Fame horses lost this race. In the 1919 running, Cudgel beat two Hall of Famers: Exterminator and Triple Crown champion Sir Barton. On September 29, 1920, Man o' War won the Potomac Handicap at Havre de Grace. His son, U.S. Triple Crown winner War Admiral, won his first race here on April 25, 1936. The track was located halfway between the cities of Philadelphia and Washington, D.C. In the 1940s, it began losing customers to Delaware Park Racetrack and Garden State Park Racetrack in New Jersey. By 1949, its owners were forced to turn over some of their allotted racing days to Baltimore's Pimlico Race Course. In January 1951, the Havre de Grace Racetrack was sold to Alfred G. Vanderbilt II, owner of Pimlico Race Course, and Morris Schapiro of Laurel Park Racecourse. who closed the facility and transferred the track's racing allotment dates to their own tracks. The Havre de Grace Racetrack is now the property of the Maryland National Guard, which uses the former clubhouse as offices. The grandstand, minus the canopy, has been converted into a warehouse. Nothing of the actual track remains, but an aerial view reveals a curved line of trees along the final turn.

Martha Lewis is a Chesapeake Bay skipjack built in 1955. Her home port is Havre de Grace, Harford County, Maryland.She was listed on the National Register of Historic Places in 2008. She is assigned Maryland dredge number 8.

A statue of Ernest Burke is a statue of Havre de Grace, Maryland-born baseball player Ernest Burke (1924–2004). It was created by sculptor Austen Brantley and was erected in Havre de Grace's Millard Tydings Memorial Park in 2021.

The Raid on Havre de Grace was a seaborne military operation that took place on 3 May 1813 during the broader War of 1812. A squadron of the British Royal Navy under Rear Admiral George Cockburn attacked the town of Havre de Grace, Maryland, at the mouth of the Susquehanna River. Although the raid resulted in just one American casualty, it catalyzed widespread hatred of Cockburn by the Americans.

The Susquehanna River (; Lenape: Siskëwahane) is a major river located in the Mid-Atlantic region of the United States, overlapping between the lower Northeast. At 444 miles (715 km) long, it is the longest river on the East Coast of the United States. By watershed area, it is the 16th-largest river in the United States, and also the longest river in the early 21st-century continental United States without commercial boat traffic. The Susquehanna River forms from two main branches: the North Branch, which rises in Cooperstown, New York, and is regarded by federal mapmakers as the main branch or headwaters, and the West Branch, which rises in western Pennsylvania and joins the main branch near Northumberland in central Pennsylvania. The river drains 27,500 square miles (71,000 km2), including nearly half of the land area of Pennsylvania. The drainage basin includes portions of the Allegheny Plateau region of the Appalachian Mountains, cutting through a succession of water gaps in a broad zigzag course to flow across the rural heartland of southeastern Pennsylvania and northeastern Maryland in the lateral near-parallel array of mountain ridges. The river empties into the northern end of the Chesapeake Bay at Perryville and Havre de Grace, Maryland, providing half of the Bay's freshwater inflow. The bay lies in the flooded valley, or ria, of the Susquehanna.

The 2005 LPGA Championship was the 51st LPGA Championship, played June 9–12 at Bulle Rock Golf Course in Havre de Grace, Maryland. This was the second of four major championships on the LPGA Tour in 2005. Two-time defending champion Annika Sörenstam won for the third consecutive year, three strokes ahead of runner-up Michelle Wie, a 15-year-old amateur. It was the ninth of Sörenstam's ten major titles, and was also consecutive major wins, as she won the Kraft Nabisco Championship by eleven strokes in March. Wie's inclusion created some controversy, as the event was traditionally for professionals only; she turned pro four months later in October. Starting with this edition, the LPGA Championship was played at Bulle Rock for five consecutive years, through 2009; the previous eleven were held in nearby Delaware at DuPont Country Club in Wilmington.

The 2007 LPGA Championship was played from June 7–10 at Bulle Rock Golf Course in Havre de Grace, Maryland. This was the 53rd edition of the LPGA Championship, the second of four major championships on the LPGA Tour in 2007. Suzann Pettersen, age 26, won her first major title with 274 (−14), one stroke ahead of runner-up Karrie Webb; it was her second career win on the LPGA Tour.

The 2008 LPGA Championship was the 54th LPGA Championship, played June 5–8 at Bulle Rock Golf Course in Havre de Grace, Maryland. This was the second of four major championships on the LPGA Tour in 2008. The champion was tour rookie Yani Tseng, age 19, with a playoff victory over Maria Hjorth. The two finished regulation play at 276 (−12), one stroke ahead of Annika Sörenstam and Lorena Ochoa. Tseng birdied the fourth extra hole for her first career win on the LPGA Tour and became the first rookie to win a major in a decade.This championship was played at Bulle Rock for five consecutive seasons, 2005 through 2009.

The 2009 LPGA Championship was the 55th LPGA Championship, played June 11–14 at Bulle Rock Golf Course in Havre de Grace, Maryland. This was the second of four major championships on the LPGA Tour in 2009. Tour rookie Anna Nordqvist, age 22, won her first major title, four strokes ahead of runner-up Lindsey Wright. It was Nordqvist's first career win on the LPGA Tour. Beginning in 2005, this championship was played at Bulle Rock for five consecutive seasons, ending with this edition.