The Dery Mansion was constructed in 1900 in a Georgian Revival style but was substantially enlarged between 1910 and 1917 to become a large, grand Classical Revival mansion with Beaux Art influences.  Desiderius George Dery became the largest individual silk manufacturer in the worked, and his financial success from his silk mills was quickly reflected in his primary residence.  The entire house is decorated with extensive limestone decorative details, such as window sills, lintels with center keystones and jack arches, dentil cornice, fluted columns and pilaster and much more.

The interior of the home features main entrance vestibule walls covered with marble.  Centered on the third floor ceiling is a large stained glass skylight with a geometric design, which lights the entire stair.  The stair hall has tall paneled Italian oak wainscot throughout.  Additional elements include a marble fireplace mantel and oak framed etched glass overmantel.

The library/parlor has a three-part bay window, parquet hardwood floor and a short paneled oak wainscot.  Opposite the library is a large parlor.  A tall oak pocket door separates it from the main stair.

The parlor has an elaborate marble fireplace, parquet hardwood floor and short paneled carved oak wainscot.  The parlor opens into the polygonal dining room.  The dining room has full paneled oak walls, a plaster cover cornice with decorative plaster trim and several leaded glass windows. A small conservatory is located off the parlor.  Beyond the parlor is a large room that housed Mr. Dery's art collection. The original stair located in the corner of the room opens to the ballroom below.

The basement level of the mansion contains a commercial kitchen, rathskeller, ballroom, several storage rooms and servants quarters.  The ballroom features parquet floors and paneled wainscot.  The ceiling has horizontal beams with wide ornamental plaster brackets at the wall junction. The bar room ceiling is decorated with delicate, decorative molding arranged in a geometric pattern.  There are several leaded glass double-hung windows featuring a hand painted window plaque that depicts a hunting motif in the upper sash. The floor is covered with square and rectangular mosaic tiles with a section of designs of the zodiac.

Returning to the center hall one can see the large stained glass skylight as you ascend the stairs.  Several rooms can be observed before going out on to the roof deck. A brick parapet and limestone balustrade surround the deck.  A wooden pergola is also located here.  From here one returns to the center hall and leaves the building.  Gardens and a terrace surround the house. The terrace floor is covered with Moravian tiles manufactured in Doylestown.  There is one time decorated with an eagle on the entire terrace floor.

The Derry Mansion is presently being renovated as a Historic Inn and scheduled to open in early 2007.