The Seljuk Caravanserais of Anatolia represent one of the most impressive architectural achievements of medieval Islamic civilization-massive roadside inns strategically placed along trade routes to provide safety, shelter, and services for merchants, pilgrims, and travelers. Built during the Seljuk Sultanate of Rum (11th-13th centuries), these structures were typically constructed as fortified stone fortresses at intervals of approximately 30-40 kilometers (a day's journey). Notable examples include the Sultan Han near Aksaray, the Sultan Han near Kayseri, and the Agzikara Han. These caravanserais were more than simple shelters-they were sophisticated complexes offering free food and lodging for three days to travelers of all backgrounds and religions, reflecting Islamic principles of hospitality (diyafah) and charity (sadaqah). The typical design featured massive stone walls with a single monumental entrance portal decorated with intricate geometric and floral carvings (mukarnas). Inside, a large open courtyard (for animals and summer use) led to a covered hall (for winter use) with a central dome, iwans, and fireplace. The complex included stables, storage rooms, sleeping quarters, a kitchen, a bakery, a bath, a small mosque, and often a market. The caravanserais were funded through charitable endowments (waqf), which also paid for staff, maintenance, and the provision of free services. These institutions served as economic engines, facilitating trade along the Silk Road and contributing to the prosperity of Seljuk cities. They also served as cultural exchange centers, where merchants from diverse backgrounds exchanged not only goods but also ideas, technologies, and information. The Seljuk caravanserais demonstrate the sophisticated infrastructure that supported the medieval Islamic economy and the integration of commerce with religious and social welfare. For Muslims, they represent the practical application of Islamic values of charity, hospitality, and community development, creating sustainable institutions that served both worldly needs and spiritual reward (sadaqah jariyah). Many of these magnificent structures survive today, testifying to Seljuk architectural genius and their vision of a connected, prosperous, and charitable society.