Managua pieces from new promising artists, are exhibited. In the numismatic hall there is a permanent exhibition of Nicaraguan coins, bills, and memorial medals from throughout Nicaragua's history. Managua is also home to "Museo Sitio Huellas de Acahualinca" (the Museum of Acahualinca), where the Ancient footprints of Acahualinca, fossilized Paleo American footprints made 2,100 years ago, are engraved in volcanic ash. The museum is located in west Managua in the Acahualinca neighborhood. In addition to the footprints, the museum also displays artifacts found in other localities around the country. Artifacts such as mammoth footprints, pre-Columbian tools, a skull from León Viejo,
Managua and reconstruction programs were expanded. New governmental buildings, galleries, museums, apartment buildings, squares, promenades, monuments, boat tours on Lake Managua, restaurants, nighttime entertainment, and broad avenues have resurrected part of downtown Managua's former vitality. Commercial activity, however, remains low. Residential and commercial buildings have been constructed on the outskirts of the city, in the same locales that were once used as refuge camps for those who were homeless after the earthquake. These booming locales have been of concern to the government because of their close proximity to Lake Managua. The construction of a new sewer system and the redirecting of