A visit to Washington, D.C. is a rite of passage for U.S. citizens, and no trip is complete without seeing the well-known monuments and museums. But there's plenty to see beyond the White House, Capitol and National Archives. On a recent visit, my son and I explored some of the newer and lesser-known attractions.

In her latest movie, "Salt," Angelina Jolie plays a double agent. And recently, a Russian espionage ring was discovered operating in the United States. With so much covert hanky panky going on, a visit to the International Spy Museum topped our list of must-see attractions.

The museum opened in 2002 and houses an impressive collection of secret gadgets, including a clever doggy poo transmitter. Who would dare pick it up? The number of spy-related exhibits is overwhelming, challenging even the most loyal sleuth to see everything. For an added charge, visitors can play "Spy in the City," which allows them to track spies around the town with a GPS locator.

The Newseum, which opened in 2008, chronicles the history of journalism and the media. We found it to be one of the least crowded and most interactive museums we visited. Video games allow visitors to make publishing decisions on deadline, and TV cameras provide an opportunity to do a live stand-up.

The Franklin D. Roosevelt Memorial was dedicated in 1997 and sprawls seven and half acres, making it the largest memorial to a president on the National Mall. Waterfalls are everywhere and serve as a constant reminder of Roosevelt's roots along the Hudson River and his service as Assistant Secretary of the Navy. This is a peaceful spot to enjoy quiet reflection, away from the hubbub surrounding the Lincoln Memorial.

Franklin D. Roosevelt's words also appear on the new World War II Memorial, which was long overdue and finally dedicated in 2004. The memorial is seamlessly integrated between the Lincoln Memorial and the Washington Monument. Symbolism abounds in the structure but most notable might be the 4,048 gold stars, which each represent 100 American service personnel who died or remain missing.

Like the Vietnam Veterans Memorial, the The Korean War Veterans Memorial is simple but moving. The poignant words "Freedom is not free" punctuate the serenity of a quiet reflecting pool. The memorial was dedicated in 1995 and includes 19 marching stainless steel soldiers.

Sculptor Stanley Bleifeld's Lone Sailor statue dominates the United States Navy Memorial. Dedicated in 1987, the memorial includes a granite replica of the world's oceans and seas. The 26 bronze bas-reliefs that commemorate naval history are striking. Of course, water is everywhere, making it a good place to beat the heat.