Key highlights include Phra Vihara Somdej, Phra Rabiang Kod (curved corridor) which encircles the main chapel and Sala Nam (water pavilion). One of the objectives in establishing Wat Benchamabophit, the so-called Marble Temple, is to serve as one of national museums for the exhibition of Buddha images from various eras. Once when the King Chulalongkorn had conferred the blessing on the establishment of Wat Benchamabophit, a royal thought was given to include ancient Buddha images for the sake of beauty and grandeur, as well as for general public to worship. King Chulalongkorn had officially endorsed Prince Damrong Rajanubhab, who was responsible for the seeking of Buddha images that His Majesty the King might be interested in. For this reason, Wat Benchamabophit National Museum has been well known for having housed the finest collection of antique, artifacts and religious arts in which are conserved in key sections as follows:

1. Phra Vihara Somdej is a two-storey tetrahedron-shaped building. The pediment and entrance feature stucco with the decoration of gold leaf and mirror mosaic by which are finished off with the Royal Cypher. Previously, the monastery was used as a Buddhist manuscript library of Wat Benchamabophit. Later when a large collection of Buddhist images arrived from other regions and temporarily kept at Phra Rabiang Kod, the spaces became inadequate. Since then, Phra Vihara Somdej was used to store precious Buddha images, artifacts and religious arts of Wat Benchamabophit. The ground floor features significant Buddha images which are smaller than those installed on Phra Rabiang Kod. Derived from temples in Bangkok and major cities, these Buddha images feature unique traits and artistic forms that are considered distinct examples for the study of Buddha images of different eras. Key pieces include those featuring Lanna, Sukhothai, Ayutthaya and Rattanakosin eras.  

2. Phra Rabiang Kod encircling the main chapel of Wat Benchamabophit houses an array of important Buddha images. Beside the duplicated Phra Buddha Chinnarat, which was installed as the principle Buddha image of the temple, there are other interesting Buddha images installed along the corridor and at other buildings.     

3. Sala Nam (water pavilion) is a single-storied building on the east side whereby King Chulalongkorn had granted the installation of Buddha images which were unable to fit in at the Phra Rabiang Kod due to sizes.