This door can be found in Cardiff Castle.
Here is another door from Cardiff Castle.
This door is an entrance to Castell Coch.
Here is the main door to the keep at Trim Castle in Ireland.
Here is a great door. It is the main door to the Red Fort in India. And notice there the smaller door so they can let people in and out without opening the whole big door.
This door is at The Cloisters in New York City
This door is in Bryn Athyn Cathedral, Pennsylvania
A Gothic Revival Church in Bedford Pennsylvania
Grey Towers Castle in Pennsylvania
Hearst Castle in San Simeon California
Joslyn Castle in Omaha Nebraska
St. Louis Basilica
Door to the Moravian Pottery in Doylestown Pennsylvania.
The Red Gym in Madison Wisconsin