Features: It depicts all unesco sites in a map with interactive filtering.
Additionally, you can add visiting dates of yourself and friends and visualize these, too
The whole code consists of three R files: server.R, ui.R and sites.R
The app itself is run via the files server.R and ui.R
For some background go to: https://www.rstudio.com/products/shiny/
sites.R is used to create the underlying csv file, used by the app as a database of sorts.
It is only used for initial setup and when the official list has been amended. This takes place usually every year/ every other year.