It's just the top of her pantyhose..
Time Travel.
New Cathedral, Salamanca, Spain.
Building began in 1513 and the cathedral was consecrated in 1733.
"The astronaut, along with other contemporary symbols was added in 1992 during restoration work on the "new" cathedral. The person responsible for the restoration, Jeronimo Garcia, reportedly chose an astronaut as a fitting symbol of the twentieth century. According to an article about the restoration (in Portuguese - Click here for Google translation to English), it is a tradition of cathedral builders and restorers to include a contemporary symbol on the building as a means of "signing" their work."