Best known for its vast collection of azaleas, (a popular porch-flower), this 446-acre (180-hectare) garden park has much else to offer. Fountains, pools and open space separate a series of focused gardens at the United States National Arboretum. The National Bonsai Collection, a gift from Japan, is a fascinating exhibit of tiny trees. Other notable sections are the aquatic garden (filled with lotuses of many varieties) and the National Herb Garden.

One of the largest cathedrals in the world, the National Cathedral is more than an Episcopal cathedral; it is a national shrine. Being the site of several significant memorial services, the cathedral lives up to its role of a ‘spiritual home for the nation’. The final Sunday sermon delivered by the Rev. Dr. Martin Luther King, Jr., is only one among the many notable historic moments that the cathedral has witnessed. The flying buttresses, gargoyles, crypts, an enormous vaulted ceiling and intimate chapels all contribute to this architectural marvel. Furthermore, the curving walkways, well-kept hedges and spacious lawns invite exploration. When in Washington, a visit to this national treasure simply cannot be missed.

Arlington National Cemetery is the final resting place of the soldiers who gave their lives in service to the country. Two of America's former presidents, John F. Kennedy and William Howard Taft, are buried here. The crew of the Challenger space shuttle, civil rights leader Medgar Evers, and film star Audie Murphy are among the many honored here. The Tomb of the Unknown Soldiers, containing the remains of unidentified soldiers from World Wars I, II, and the Korean War,is protected by the 3rd U.S. Infantry Regiment, or the Old Guard, 24 hours a day. The changing of the guard ceremony is a moving tribute to them.

Set among the fashionable Foxhall Road estates in upper northwest Washington, the former residence of Carmen and David Kreeger holds a marvelous collection of 19th and 20th-century art. Artists such as Picasso, Van Gogh, Kandinsky and Rodin are represented, among many other artists. A fine collection of African art is also housed here. The Kreeger Museum's grounds also feature a sculpture garden. However, the museum requires some advance planning to visit since reservations are required to join the docent-led tours, but the effort is well worth it.

Ford's Theatre, an iconic theater, is recognized as the place where President Abraham Lincoln was assassinated on April 14th, 1865. A century later, in January 1968, the theater was reopened again for a performance after being under the management of numerous government organizations, including the United States Department of War and the National Park Service. Also found within Ford's Theatre is a Lincoln Museum that displays artifacts from the assassination, including the gun Lincoln was shot with. Mementos from Lincoln's life are also on display.

A landmark in the city, the Eastern Market is a bustling marketplace where one can find everything from hats and scarves to decorations, photographs, poultry, produce, fruits and vegetables. A hub of activity, it is centered around a historical building that used to be the site of the old market. Today, the market has overflowed onto the roadside as well, with vendors displaying their goods to daily shoppers. There are often events and cultural performances here along with a flourishing flea market.

With a diverse range of retailers and suppliers providing a wide array of artisan food products, Union Market is every foodie's paradise. There are over 40 different stalls and vendors at Union Market,offering everything from fresh produce and meats to prepared foods and desserts. Gourmet coffee, specialty ice cream, gelato, artisanal bread, baked goods, florists, delis, food stalls, and much more are available here. In addition to food, Union Market is a hub for artisanal products. Explore unique shops offering handmade crafts, local art, and specialty goods. The market is also an excellent place to find one-of-a-kind gifts or souvenirs, supporting local businesses and artisans. While it is accessible via Metro, driving here is a better option, especially in the evenings.