In a rapidly changing world, some things have remained unchanged for thousands, even millions, of years.
From the first civilizations to natural phenomena and human creations that have survived the ages, these are 9 of the oldest things on Earth.
The oldest civilization
Mesopotamia is generally considered the first urban civilization, spanning an era from about 8000 BC to 2000 BC. The Sumerians and Akkadians dominated Mesopotamia from the beginning of recorded history (about 3100 BC) until the fall of Babylon in 539 BC.
The oldest religion
Hinduism is often considered the oldest extant religion still practiced today. It is also the most complex of all established belief systems, with origins dating back more than 5,000 years in India.

The oldest monarchy
The Kingdom of Sweden is the oldest monarchy in the world, with Eric the Victorious (c. 945–c. 995) considered the first Swedish king.
The oldest country
The oldest country in the world is San Marino. Founded on September 3, 301 AD, this small enclave in the middle of Italy has enjoyed its status as a sovereign state uninterrupted since its independence from the Roman Empire.

The oldest tree species
The Great Basin Bristlecone Pine (Pinus longaeva) is the oldest known tree species, reaching an age of over 5,000 years. The trees are found in the highest mountains of California, Nevada.
The oldest song
The Hurrian 'Hymn to Nikkal' is considered the oldest song in the world. Also known as 'h.6', the song is part of about 36 hymns written in cuneiform on clay tablets discovered in the ancient city of Ugarit in northern Syria. The Hurrians were a people who inhabited the ancient Near East during the Bronze Age.
The oldest circus
The Circus Maximus of ancient Rome is the oldest known circus that ever existed. Founded in the 1st century AD, it was a large arena where chariot races and various performances were held. The site is now a public park.

The oldest port
The port of Byblos in Lebanon is believed to be the oldest existing port, in use for more than 3,000 years. The most important timber transport hub in the eastern Mediterranean, it was used by the Phoenicians to transport wine and timber for the pharaohs of ancient Egypt.
The oldest desert
Dating back somewhere between 55 and 80 million years ago, Namibia is believed to be the oldest desert in the world.