Pailou refers to traditional Chinese architectural gateways, also known as牌楼 (páilóu). These structures are typically constructed from wood, stone, or brick and serve as ceremonial entrances to temples, palaces, parks, and other significant public spaces throughout China.
While the term can refer to specific locations in various regions, it most commonly describes a stylistic architectural feature rather than a single city. These gateways are often characterized by their ornate carvings and represent cultural landmarks that signify transitions between different types of spaces or honor historical figures and events.