St. Patrick's Cathedral

Postcard US-3263831 to California was a vintage card showing St. Patrick's Cathedral, a decorated Neo-Gothic-style Roman Catholic cathedral church and a prominent landmark of New York City, directly across the street from Rockefeller Center in midtown Manhattan and specifically facing the Atlas statue. The cathedral was completed in 1878, The cathedral and associated buildings were declared a National Historic Landmark in 1976. According to a spreadsheet of NRHP list from the National Park Service, it was listed in the National Register of Historic Places on December 8, 1976 with a reference number 76001250.

Oude Kerk in Delft

Postcard NL-2434080 from the Netherlands shows the Oude Kerk (Old Church), a Gothic Protestant church, in the old city center of Delft in the Netherlands. It is noted for a 75-meter brick tower that leans about two meters from the vertical.

Last in 2013 or First in 2014?

Postcard ES-215704 from Spain was the last official card I received in 2013. However, since the PostCrossing server resides in UTC/GMT zone, the registered arrival date was January 1, 2014. That would make this card my first in the New Year.

The postcard shows a night view of Seville, the fourth-largest city in Spain, with the Torre del Oro (Gold Tower) at the left-center by the Guadalquivir River and the Cathedral of Saint Mary of the See at the top-right in the background.

Built in the early 13th century, the Torre del Oro was a military watch tower that controlled access to Seville via the river. It got its name due to its golden shine projected on the river, caused by its building materials: a mixture of mortar, lime and pressed hay. It served as a prison during the Middle Ages. 

The Cathedral of Saint Mary of the See, known as Seville Cathedral, is a Roman Catholic cathedral that ranks as the largest Gothic cathedral and the third-largest church in the world. It was recognized as a World Heritage Site by UNESCO in 1987, along with the Alcázar palace complex and the General Archive of the Indies.