This document discusses integrating cultural heritage and the Internet of Things (IoT) in smart cities. It begins by defining what constitutes a city and smart city according to the EU. It then discusses how cultural heritage sites like Ostia Harbor and the Arsenal in Venice can be better integrated into smart city initiatives using data and technologies. This includes capturing more comprehensive historical data on cultural sites through projects like the Venice Time Machine. The document advocates developing applications that allow virtual exploration of cultural heritage sites across space and time. Overall it argues that leveraging cultural heritage through IoT and big data approaches can boost local economies, experiment with new technologies, and help rediscover place identities.