Most likely the best-preserved ancient structure in Rome, the nearly 2,000-year-old Pantheon is the definition of remarkable. For starters, it helped establish Classical architecture—with its portico and columns, triangular pediment, rotunda and dome—influencing the architectural style for important buildings the world over for centuries; its dome is one of the largest in the world (until the 15th Century, it was the largest), defined by a large oculus, which provides the only source of light; and finally, this Ancient Roman temple has been in continuous use since the 7th Century and is only now beginning to show its years. If possible, visit on a sunny day to see why the beams of light streaming into the rotunda are dubbed “God’s rays.”
It's free so many people seem to think it's a quick in and out but linger; listen or read a guide. This the most well preserved ancient Roman building you'll ever see unless you rent a time machine. Mentally replace the Christian statues with Roman gods and your there. Also, visit Raphael's resting place. Soak up the atmosphere. Well worth it.
One of the iconic buildings that represent the Roman era in history. Originally built as a cemetery for great leaders and then changed into a church. A masterpiece in architecture, contains many nice sculptures inside. The surrouding streets and yard are also charming with a lot of cafes and restaurants around, where you can take a nice meal and listen to live music played in the street.
An absolute must see for those seeking both classic Roman architecture and gorgeous Catholic Churches. Functional church inside so you could stop and say a prayer if you so choose, or you can walk through for free. Nice area with lots of tourist type restaurants and some great gelato spots. If you wander a few streets over there are some nice shops. Walking distance to lots of other beautiful churches and museums.
If you ask me what you need to see in Rome, this is my answer: Pantheon! A marvelous well-preserved antique temple with the most mystic magic dome as roof with a hole in the middle that sunlight shines almost divinely fine in from. It's so beautiful inside so you must go there and is free to visit and still after more than 2000 years works as a sacred place in full function. So beautiful!
One of the most breathtaking buildings and internal spaces in the world. Atmosphere in the evening around the fountains is romantic especially when the buskers are on good form. Tread carefully with nearby restaurants, remember good location won't make up for bad food.