The Old Post Office Tower is a must-visit point of interest in the District of Columbia. This historic building, built in 1899, was once the city's main post office. It is now part of the Trump International Hotel and serves as a popular tourist attraction.

One of the top reasons to visit the Old Post Office Tower is the stunning panoramic views of Washington, D.C. from its observation deck. Visitors can take an elevator to the top of the tower and enjoy breathtaking views of the city's iconic landmarks, such as the Washington Monument and the United States Capitol.

In addition to the observation deck, the Old Post Office Tower also features exhibits about the building's history and architecture. Visitors can learn about the building's use as a post office and the intricate details of its Romanesque Revival-style design.

Another unique feature of the Old Post Office Tower is its massive clock tower. Visitors can tour the tower and see the inner workings of the clock, which has been keeping time for over a century.

Overall, the Old Post Office Tower is a must-visit for anyone in Washington, D.C. It offers stunning views of the city, fascinating exhibits about its history and architecture, and a chance to see a 100-year-old clock tower up close.