Triumphal arch

Okay kiddo, a triumphal arch is like a big, fancy doorway that you might see in a museum or a park. They're called "triumphal" because they're often built to celebrate important events or victories, like a big parade or a military victory.

The arch is made up of a big curved shape at the top, and two big pillars on each side. Think of it like a really tall, skinny rectangle that's been cut in half at the top. The arches are often decorated with fancy carvings or statues, like scenes from the event or important people or symbols.

People used to build these arches a really long time ago, like in ancient Rome or Greece. They were often used to celebrate the achievements of an emperor or a general, and to show off how powerful and important they were. Nowadays, people still build triumphal arches sometimes, but they're usually just for decoration or to look pretty.