"The largest espionage museum, in terms of collection size, is the International Spy Museum in Washington, D.C., USA. As of 17 March 2020, this museum has a collection that includes 9,281 catalogued items," the Guinness World Records says.

"A large portion of the museum's collection is a permanent loan from private collector and espionage historian H. Keith Melton."

"The International Spy Museum is officially the world's largest espionage museum! SPY was awarded the title by the Guinness World Records for the largest espionage museum, in terms of collection size," The International Spy Museum® says.

"As of 17 March 2020, the museum has a collection that includes 9,281 catalogued artifacts. The enormous collection tripled in size in 2017 as a result of an impressive pledged donation from private collector and espionage historian H. Keith Melton, a founding Spy Museum board member. 

"From the lipstick pistol to the Enigma cipher machine, the artifacts and items featured in the collection chronicles the history of espionage, from its inception, to the modern day challenges facing intelligence professionals worldwide in the 21st Century." says.

"The International Spy Museum is an independent non-profit history museum which documents the tradecraft, history, and contemporary role of the intelligence field and espionage. It holds the largest collection of international espionage artifacts on public display. The museum opened in 2002 in the Penn Quarter neighborhood of Washington, D.C., and relocated to L'Enfant Plaza in 2019.

"Milton Maltz, a code-breaker during the Korean War and founder of the Malrite Communications Group in 1956 (later The Malrite Company), conceptualized the International Spy Museum in 1996 as a for-profit organization. The original museum facility in the Penn Quarter neighborhood was built by Milton Maltz and The House on F Street, L.L.C. at a cost of approximately US$40 million.[6] It opened to the public in 2002.

"The foundation cost of the original museum was half funded by the Malrite Company; the other $20 million came from the District of Columbia through enterprise zone bonds and TIF bonds. The museum was part of the ongoing rejuvenation of Penn Quarter, kicked off in the 1980s by the Pennsylvania Avenue Development Corporation."(Wikipedia)

"The museum houses more than 7,000 artifacts with around 1,000 on public display, accompanied by historical photographs, interactive displays, film, and video.

"The permanent collection traces the complete history of espionage, from the Ancient Greeks and the Roman Empire, the Middle Ages, the Renaissance, the British Empire, the American Revolutionary War, the French Revolution, the Napoleonic Wars, the American Civil War, both World Wars, the Cold War, and through present day espionage activity.(Wikipedia) "

"With interactive exhibitions and installations, the foremost collection of spy artifacts in the world, and first-person accounts from top intelligence officers and experts, the International Spy Museum places visitors in the shoes of the spies.

"The immersive exhibit pays homage to the much-beloved James Bond spy movie franchise. View 17 of the most iconic 007 vehicles from the James Bond film franchise courtesy of EON Productions Limited, Danjaq, LLC., and the Ian Fleming Foundation now on display through September 2025," the Washington, .D.C. says.

"Additional Museum Highlights:
• Expanded space at 140,000 square feet, double the footprint on F Street
• RFID technology and interactive stations
• Rotating Special Exhibitions
• State-of-the-Art Theater/Lecture Hall
• Increased Classroom Space
• Educational programming
• Private Event spaces and Rooftop Terrace with sweeping views of DC

"nternational Spy Museum has hosted 82 events in the C-SPAN Video Library; the first program was a 2002 Speech. The year with the most events was 2014 with seven events," the C-SPAN says.

"The year with the highest average number of views per video was 2012 with an average of 6,761 views per video. Most appearances with Peter Earnest (49), Vince Houghton (12), Chris Costa (7). Most common tags: Intelligence, Cold War, World War II."

"The International Spy Museum is dedicated to the craft, technology, and global history of none other than espionage. Its wide assortment of displays covers everything from Cold War surveillance to cyber intelligence, featuring authentic spy gear, declassified gadgets, and real-world spy stories," the World Atlas says.

"Here, you'll get the chance to examine ingeniously designed oddities like lipstick pistols, cipher machines, and disguises used by intelligence agents. At the same time, another unique feature, the museum's digital stations, assigns guests undercover identities to test their spy skills throughout the visit. Interestingly, this museum presents content from a global perspective, with sections on Soviet operations, World War II spy networks, and modern counterterrorism peppered in."

World's Tallest Obelisk, world record set by the Washington Monument

World’s Largest Library, world record set by The Library of Congress

World's Largest Collection Of Artifacts On A Single Subject, world record in Salt Lake City, Utah

World's Largest Apron Museum, world record in Iuka, Mississippi

 Largest collection of umbrella covers, world record in Peaks Island, Maine