Royal tombs of the Joseon dynasty are a group of 40 tombs located on 18 different sites. They were built between 1408 and 1966 to honor Joseon ancestors' memories. They are organized on the same basis, with gates and buildings at the entrance and tombs set on the top of little hills called tumulis. On the top of these tumulis are also set up different statues representing people (soldiers, religious) and animals (sheep, cow, horses).
Some of these sites are located in Seoul and can be easily visited, taking the subway to the stop Seollung on line 2 (green) for example to see three of the tombs.
It's very interesting to visit these complexes to approach Korean culture and traditions. They are a great stone in the wall of Korean culture.