an interest for the culture of Ancient Egypt. Compared to other cases of exoticism, the one with the land of pharaohs is the oldest one, since Ancient Greeks and Romans had this interest during Antiquity. The main periods when Egyptian Revival monuments were erected were the early 19th century, with Napoleon's military campaigns in Egypt, and the 1920s, when the Tomb of Tutankhamun was discovered in 1922, which caused an Egyptomania that lead to Art Deco sometimes using motifs inspired by Ancient Egypt. During the late 18th and early 19th century, Neoclassicism sometimes mixed Greco-Roman elements with Egyptian ones. Because of its association with pharaohs, death and eternity, multiple Egyptian Revival tombs or cemetery entry gates were built in this style. Besides mortuary structures, other buildings in this style include certain synagogues, like the Karlsruhe Synagogue or some Empire monuments built during the reign of Nepoleon, such as the Egyptian portico of the Hôtel Beauharnais or the Fontaine du Fellah. During the 1920s and 1930s, Pre-Columbian Mesoamerican architecture was of great interest for some American architects, particularly what the Mayans built. Several of Frank Lloyd Wright's California houses were erected in a Mayan Revival style, while other architects combined Mayan motifs with Art Deco ones. Neoclassicism Neoclassical architecture focused on Ancient Greek and Roman details, plain, white walls and grandeur of scale. Compared to the previous styles, Baroque and Rococo, Neoclassical exteriors tended to be more minimalist, featuring straight and angular lines, but being still ornamented. The style's clean lines and sense of balance and proportion worked well for grand buildings (such as the Panthéon in Paris) and for smaller structures alike (such as the Petit Trianon). Excavations during the 18th century at Pompeii and Herculaneum, which had both been buried under volcanic ash during the 79 AD eruption of Mount Vesuvius, inspired a return to order and rationality. In the mid-18th century, antiquity was upheld as a standard for architecture as never before. Neoclassicism was a fundamental investigation of the very bases of architectural form and meaning. In the 1750s, an alliance between archaeological exploration and architectural theory started, which will continue in the 19th century. Marc-Antoine Laugier wrote in 1753 that 'Architecture owes all that is perfect to the Greeks'. The style was adopted by progressive circles in other countries such as Sweden and Russia. Federal-style architecture is the name for the classicizing architecture built in North America