The 21st century began in the year 2001.

This city was founded centuries ago.

At the end of the 20th century, the internet became widespread.

Centuries ago, people lived differently.

The turn of the century was a time of cultural change.

The turn of the centuries mark important cultural changes.

The ruins stood untouched for centuries.

This centuries-old castle is an impressive historical monument.

The centuries-long tradition is still maintained to this day.

The centuries-long tradition is passed down from generation to generation.