If you walk up to your average American home today, chances are you're probably not going to notice the door's design very much. Unless the owners have taken pains to make the door décor eye-catching, it will probably be elegantly utilitarian at best and drab at worst. But doors, as the following five examples prove, can make a big difference in the look and feel of a building. So without further ado, here are some of the most lavish door designs in the world.

The Doors of the Baptistry in Florence
The northern doors of the Florence Baptistry were designed by Lorenzo Ghiberti. Ghiberti was a famous Renaissance architect who competed against Filippo Brunelleschi, among other artist, to win the commission for the Doors in 1401. It took him 21 years to complete the project. The final result was one of the most recognized doorways in all of Europe. Made of gilded bronze, the Baptistry Doors are decorated with 28 panels that depict scenes from the New Testament.

The Columbus Doors
The Columbus Doors serve as one of the entryways into the U.S. Capitol Building's Rotunda in Washington, D.C. and their design owes a lot to Ghiberti's Baptistry Doors. The Columbus Doors are made of bronze and stand 17 feet tall, weighing in at 20,000 lbs. The panels that adorn the doors depict scenes from Christopher Columbus's life and voyages.

Hohenstein Castle
The Hohenstein Castle in Germany is an excellent model of typical architecture of the Middle Ages. Its original intent when it was built in 1180, as with most castles of the time, was to defend against attack. This military purpose is evident in the design of the castles doors, which are massive wooden panels reinforced with spikes steel plates and hanging from huge, hand-wrought hinges, similar to door pulls by DHS Hardware. Today, Hohenstein Castle is a hotel.

Taj Mahal
The Taj Mahal was originally commissioned by Emperor Shah Jahan in honor of his favorite wife, Mumtaz Mahal. The huge mausoleum is the best specimen of Mughal architecture, which combines aspects of Islamic, Indian and Persian architectural designs. The doorways of the Taj Mahal are all impressive. Many, like the one pictured here, contain archways, within archways and are accentuated by overhead marble panels decorated with vine designs.

The Palace of Versailles
The Palace of Versailles became intrinsically associated with luxury, decadence and courtly intrigue during the reign of Luis XIV. His successors expanded the Palace's size and embellished its design even more. The doors of Versailles are some of the most extravagant in the world, employing gilded gold designs and marble entryways.