The Custom House is a historic building located in Salem, Massachusetts, which served as the center of commerce and trade in the city during the 19th century. Today, it has been converted into a National Park Service museum, showcasing the history of the city and the important role it played in the nation's economy.

One of the main reasons to visit the Custom House is to learn about its history and the stories of the people who worked there. The museum features exhibits and artifacts that showcase the customs and traditions of the city's merchants, sailors, and traders. Visitors can also learn about the city's connections to the Salem Witch Trials and its role in the maritime industry.

Unique things to see at the Custom House include the original building itself, which is a beautiful example of Federal-style architecture. The building's interior has been restored to its former glory, including the grand central staircase and the customs collector's office, which has been decorated with period furniture and artwork. There is also a collection of maritime artifacts on display, including ship models and navigational instruments.

In addition to its historical significance, the Custom House is also a great place to take in the scenic views of Salem Harbor. Visitors can climb to the top of the building's tower for panoramic views of the city and the surrounding waterways.

Overall, the Custom House is a must-visit destination for anyone interested in the history of Salem and the maritime trade that played a crucial role in the development of the city and the nation as a whole.