The Old Stone House was built in 1765 and is the oldest unchanged building in Washington, D.C. The house is also Washington's last Pre-Revolutionary Colonial building on its original foundation. Unlike many Colonial homes in the area, sentimental local folklore preserved the Old Stone House from being demolished.
The Old Stone House was constructed in three phases during the 18th century and is an example of vernacular architecture. During its history, the house was started as a one-story building and gradually became a used car dealership later. After a renovation in the 1950s, the Old Stone House was turned into a house museum.
The Old Stone House stands among the neighborhood's stores and restaurants as an example of local history for tourists, shoppers, and students. Today, the home is 85% original to its 18th-century construction.
References:Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.