For a standback view of the whole city, cross the Potomac river and climb the hill at the national military cemetery. On the way you can pay your respects at JFK���s memorial.
Tel: 1-703 695 3250/ 1-703 979 0690; Arlington Cemetery Metro; Open: 8am-7pm daily Apr-Sept, 8am-5pm daily Oct-Mar; Admission: free; www.arlingtoncemetery.net/
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It's also well worth seeing the Memorial Amphiteatre and Tomb Of The Unknown Soldier. Changing of the guard takes place every 30 mins in summer and 60 mins for the rest of the year. For those too tired to walk, the Tourist Bus visits all the major sites in Arlington Cemetery.
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