The 19th century saw the construction of the monumental Carrera Theater in the 1850s, and the Presidential Palace in the 1890s. At this time the city was expanding around the "30 de junio" Boulevard and elsewhere, displacing native settlements from the ancient site. Earthquakes in 1917–1918 destroyed many historic structures. Under Jorge Ubico in the 1930s a hippodrome and many new public buildings were constructed, although peripheral poor neighborhoods that formed after the 1917–1918 earthquakes continued to lack basic amenities.