1956 – Arco de la Victoria, Madrid, Spain
The Arco de la Victoria (Arc of Triumph) is the work of architect Arregui and was erected in 1956 to honor the Spanish Army.
1993 – Catedral de la Almudena, Madrid, Spain
Architect: Francisco de Cubas, Juan Moya, Fernando Chueca Goitia &
1996 – Puerta de Europa, Madrid, Spain
Architect: Pedro Senteri Cardillo & Johnson/Burgee
Each of the towers leans at an angle of 15 degrees.
