David Taylor Model Basin

The Carderock Division of the Naval Surface Warfare Center is one of eight Naval Sea Systems Command (NAVSEA) Surface Warfare Centers. The headquarters is located in Carderock, Maryland with the historic David Taylor Model Basin. The division includes remote sites across the United States concentrating on engineering, testing and modelling ship and ship's systems for the Navy. It consists of approximately 3,200 scientists, engineers and support personnel working in more than 40 disciplines ranging from fundamental science to applied/in-service engineering.

Carderock is a neighborhood located in Montgomery County, Maryland, United States, along the Potomac River. It is located in the southern part of the Potomac census-designated place and western part of the Bethesda postal area. Carderock is well known for Carderock Division of the Naval Surface Warfare Center and rock climbing at Carderock Recreation Area, part of Chesapeake and Ohio Canal National Historical Park. Carderock also includes a local school (Carderock Springs Elementary), Carderock Springs Swim and Tennis Club, and Congressional Country Club.Despite its proximity to the Capital Beltway, Carderock remains only moderately developed and traffic congested. This is due in part to the prominent presence of Rock Run, the Naval Surface Warfare Center, and Congressional Country Club. In addition, almost no roads running through Carderock have direct access to the Beltway. The only exceptions are River Road on the north end of the neighborhood and Clara Barton Parkway on the south end.

Thompson's Corner, is a small unincorporated community located in northern Montgomery County, Maryland, United States. It is located west of Clarksburg and east of Comus. The community was once marked by a house and general store on Slidell Road owned by Richard Thompson (1796-1874), a local farmer. Circa 1860, his son Jerome (1833-1905) officially founded Thompson's Corner.Through his son, Samuel, Richard Thompson is the third great-grandfather of country singer, Martina McBride.

The American Legion Memorial Bridge, also known as the American Legion Bridge and formerly as the Cabin John Bridge, is a bridge carrying Interstate 495 (Capital Beltway) across the Potomac River between Montgomery County, Maryland and Fairfax County, Virginia in the United States. It is an American Water Landmark. Plummers Island is located immediately downstream of the bridge. The bridge has five traffic lanes in each direction. The outermost lane in each direction is an entrance/exit-only lane for traffic to/from the Clara Barton Parkway in Maryland and the George Washington Memorial Parkway and Georgetown Pike (State Route 193) in Virginia. There are no facilities for pedestrians or cyclists, which are prohibited.

Rock Run is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream rise in the village of Potomac, and the creek flows southeast for 5.3 miles (8.5 km) to the Potomac River. A portion of the stream runs through Rock Run Stream Valley Park, an undeveloped park that is part of the Montgomery County MD park system.

Plummers Island is a 12-acre Potomac River island in Montgomery County, Maryland, about nine miles upriver from Washington, D.C. The Washington Biologists' Field Club has called the island "the most thoroughly studied island in North America". The island is visible from the American Legion Memorial Bridge of the Capital Beltway, just downriver (east) of the bridge. Scientific study of Plummers Island began in 1899, when botanist Charles Louis Pollard formed the Washington Biologists' Field Club and began the search for a field camp near the club's Washington, D.C. home. The club leased the island in 1901, and bought it seven years later; the island is now owned by the U.S. National Park Service, located within Chesapeake and Ohio Canal National Historical Park.A 2008 issue of the Bulletin of the Biological Society of Washington was dedicated to articles about the flora and fauna of the island. The study of the island's three main plant communities, riparian, terrace, and upland forest, documented 3,012 insect species in 253 families, in 18 orders: Collembola, Odonata, Dermaptera, Blattodea, Phasmatodea, Orthoptera, Psocoptera, Thysanoptera, Hemiptera, Neuroptera, Megaloptera, Coleoptera, Mecoptera, Trichoptera, Lepidoptera, Diptera, Siphonaptera, and Hymenoptera. Another of the studies reported 19 species of freshwater mollusks (7 bivalves, 12 gastropods) in the island's immediate area, bringing the total known for the Middle Potomac River to 42 species. A periodically updated checklist which includes all the vascular plants of the flora, including ferns, fern allies, gymnosperms, and flowering plants, that have ever been reported growing in the wild on the island and its adjacent mainland, totals 885 plant species, of which 704 are native, and 181 naturalized.

Scott's Run Nature Preserve is a nature preserve in Fairfax County, Virginia, United States. Located in McLean, it is bordered by Virginia State Route 193 to its south, Interstate 495 to its east and the Potomac River to its north. It encompasses 336 acres (136 ha) of woodland with its namesake, Scott's Run, flowing through its west side. Scott's Run originates in nearby Tysons Corner and enters the Potomac on the northwest side of the preserve. The preserve is noted for including eastern hemlocks among its plant life, which are rare for the area. It is a popular destination for recreation and hiking and is operated by the Fairfax County Park Authority.

The 1964 U.S. Open was the 64th U.S. Open, held June 18–20 at the Blue Course of Congressional Country Club in Bethesda, Maryland, a suburb northwest of Washington, D.C. Ken Venturi won his only major title, four strokes ahead of runner-up Tommy Jacobs.Jacobs held the 36-hole lead after shooting a 64 (−6) in the second round, tying the U.S. Open record at the time for a round, set by Lee Mackey in 1950. In the third round on Saturday morning, he carded an even-par 70 and retained the lead after 54 holes, two strokes ahead of Venturi, who made up four shots with a 66 (−4). Masters champion Arnold Palmer had led after the first round, but hopes of a grand slam faded with a 75 in the third. Before the final round began on Saturday afternoon, Venturi was advised by doctors to withdraw from the tournament. He was suffering dehydration due to an oppressive heat wave and had to take treatments with tea and salt tablets in between rounds. To play the final round, doctors warned, was to risk heat stroke. Venturi, however, ignored the advice and played on, then shot a 70 to Jacobs' 76 to claim a four-stroke victory. Venturi's score of 206 over the final 54 holes set a new U.S. Open record, as did his score of 136 over the last 36. The win was his first on tour in four years. Future champion Raymond Floyd made his U.S. Open debut this year at age 21 and finished in 14th place. He played the final two rounds on Saturday with Venturi. This was the last time the championship was scheduled for three days (the final two rounds scheduled on Saturday); the next year it was expanded to four days, concluding on Sunday. The Blue Course at Congressional was the longest in U.S. Open history to date, at 7,053 yards (6,449 m). A lack of rainfall in the previous six weeks reduced its effective length, and it played firm and fast.

Carderock Recreation Area is a 100-acre park in Carderock, Maryland, part of the Chesapeake and Ohio Canal National Historical Park. The area is well known as a destination for its outdoor activities of rock climbing, hiking and biking. It is bounded by the Potomac River on the south and the Chesapeake and Ohio Canal on the north, and it is accessed from Clara Barton Parkway from the same exit as Carderock Division of the Naval Surface Warfare Center. The Recreation Area includes a picnic shelter, section C of the Billy Goat Trail, convenient access to the Chesapeake and Ohio Canal, and popular rock cliffs. The area has a long history of climbing and is notable for being the closest significant climbing area to Washington, D.C. As such, it is one of the most climbed cliffs in the eastern United States. There is no fee to enter the park.

The Kemper Open was a golf tournament on the PGA Tour from 1968 to 2006. Perhaps more so than any other "regular" PGA Tour stop, the event wandered about, not just from course to course within a given metropolitan area, but along the East Coast. Originally sponsored by the Kemper Corporation, the inaugural event was played in 1968 at Pleasant Valley Country Club in Sutton, Massachusetts, before moving to the Quail Hollow Club in Charlotte, North Carolina the following year, where it stayed through 1979. (The Wells Fargo Championship is now held in Charlotte.) The event moved in 1980 to Congressional Country Club in Bethesda, Maryland, a suburb northwest of Washington, D.C., and to TPC at Avenel in 1987 in neighboring Potomac. Kemper Insurance dropped out as sponsor after the 2002 edition and was replaced by Friedman Billings Ramsey, which renamed the event the FBR Capital Open for a single year in 2003. Booz Allen Hamilton became the main sponsor in 2004, with the tournament being titled the Booz Allen Classic. The event returned to Congressional for a year in 2005 to accommodate renovations at Avenel. The purse in 2006 was $5.0 million, with $900,000 going to the winner; due to rain delays it concluded on Tuesday without a gallery. In 1992, Washington Redskins quarterback Mark Rypien, the reigning Super Bowl MVP, was given a sponsor's exemption into the tournament, but shot rounds of 80 and 91 and missed the cut by 28 strokes. As the Kemper Open, it was often played two or three weeks prior to the U.S. Open, making it a prime tune-up event; later it was either the week prior or after and many top players skipped it.. For 2007, the PGA Tour announced that it would reschedule the event for the fall, and Booz Allen declined to renew its sponsorship. The fall date was in turn canceled to make way for the new AT&T National, to take place at the same time as the Classic had. Also in 2006, the tournament ended on Tuesday due to persistent storms in the D.C. area. The conclusion of what turned out to be the final Booz Allen Classic was not televised. A new format (invitation only), new host for the tournament (Tiger Woods), and a return to Congressional Country Club marked the July 2007 stop in Washington for the FedEx Cup, the AT&T National. For record-keeping purposes, it is not a "successor" tournament officially, even though it is the "new" tour stop in the same region. During the 1970s, the Kemper Open was among the highest purses on tour, exceeding the majors.

The National, originally titled for sponsorship reasons as the AT&T National and later as the Quicken Loans National, was a professional golf tournament on the PGA Tour from 2007 to 2018. It was hosted by Tiger Woods and benefited the Tiger Woods Foundation. It was usually held either in late June or during the Fourth of July weekend in the Washington, D.C. area, except for 2010 and 2011 when it was held near Philadelphia. The National was a 72-hole stroke play tournament. It was one of a few events given "invitational" status by the PGA Tour and consequently had a field of only 120 players, as opposed to 156 players at most full-field tournaments. The first edition of The National in 2007 was held July 5–8 on the Blue Course at the Congressional Country Club in Bethesda, Maryland, northwest of Washington. The event returned to Congressional in 2008 and 2009 when it was held midway between the U.S. Open and The Open Championship to ensure a strong field of competitors. The National was part of the Open Qualifying Series that gave non-exempt players a chance to compete in The Open.

TPC Potomac at Avenel Farm (formerly TPC Avenel) is a private golf club in the eastern United States, located in Potomac, Maryland, a suburb northwest of Washington, D.C. It was formerly a regular stop on the PGA Tour as host of the Booz Allen Classic (originally Kemper Open). After a major renovation to both clubhouse and course, the clubhouse reopened in late 2008 while the course reopened on April 28, 2009.