Things To Do In Prague Klementinum Klementinum, Prague Overview The Klementinum, located in Prague city center near Old Town Square, is a historic complex that houses the National Library of the Czech Republic. It is the second-largest building complex in Prague after the Prague Castle and also comprises the Astronomical Tower. Booking in advance is highly recommended, as tickets sell out quickly. While some areas have lift access, the Astronomical Tower requires climbing narrow spiral staircases, which may be challenging for some visitors.The Clementinum (Klementinum) is a huge complex comprising of plethora of impressive baroque and rococo architectures, mainly occupied by the Czech National Library. International Travel Service in Vijay Nagar | International Service in Indore | Domestic Tour Service in Indore | Domestic Tour Planner in Indore | Domestic Travel Agents in Indore | Domestic Tour Operator in Vijay Nagar | Singapore VISA Service in Indore | Singapore VISA Service in Vijay Nagar | Malaysia VISA Service in Indore | Malaysia VISA Service in Vijay Nagar | Thailand VISA Service in Indore | Thailand VISA Service in Vijay Nagar | Dubai VISA Service in Indore | Dubai VISA Service in Vijay Nagar | UAE VISA Service in Indore | UAE VISA Service in Vijay Nagar | USA VISA Service in Indore | USA VISA Service in Vijay Nagar | Russia VISA Service in Indore | Russia VISA Service in Vijay Nagar | Europe VISA Service in Indore |