2-376-749 - Samuel Magal/Sites & Photos/Heritage Images

A mosaic floor in the House of the Swastika Cross, Conimbriga, Portugal, 2009. The House of the Swastika Cross was probably remodelled from an earlier building. The house plan is irregular because it was built over a period of time. The very colorful mosaics date from the 3rd century AD and frequently use the swastika cross, which gave the house its name. Conimbriga is one of the largest Roman settlements in Portugal, and the best preserved of them. The city walls are largely intact, and the mosaic floors and foundations of many houses and public buildings remain.