The part of Hoi An most sought-after by visitors is its incredibly photogenic mustard-coloured Old Town, a UNESCO-listed collection of beautifully preserved buildings; some of these still function as private homes, while a total of 22 are open to the public and operate largely as museums. Of particular interest are historic merchant residences, some of which offer short guided tours (the Old House of Tan Ky is among the most interesting), and Chinese assembly halls used for gatherings and celebrations by individual ethnic groups. Visiting each attraction will require one of the 5 admission slips that come with a general Hoi An Ancient Town entry ticket.

The neo-classical Royal Palace lies right at the end of Karl Johann Gate and makes for a very impressive sight. The park, which surrounds the palace, is a popular picnic and sunbathing spot thanks to its grassy areas and majestic trees. Every day at 1:30 pm the guard changing ceremony takes place.

The Orihuela Archaeology Museum has its origins in the former Santo Domingo Museum of Antiquities, established in 1902 by Jesuit priest Julio Furgús, who donated numerous pieces. Created by the Orihuela Town Council, the museum has been housed in various locations, including the Palacio de Teodomiro, the Municipal Hospital, the Rubalcaba Palace, and since 1997, its current location at the Church of San Juan de Dios, which was built in the mid-18th century. The museum's collection features artefacts that span a broad range of periods, from the Paleolithic era to the early 19th century. The majority of the items were excavated or discovered in the town and its surrounding areas, often through the museum's own investigations. The same building also houses the Exhibition Hall, formerly the men's ward of the hospital. This spacious, rectangular room with barrel-vaulted ceilings hosts temporary exhibitions and various cultural events.