Cartagena (pop. 914,500 in 2020) is a port city on Colombia’s Caribbean coast. By the sea is the walled Old Town, founded in the 16th century, with squares, cobblestone streets and colorful colonial buildings. With a tropical climate, the city is also a popular beach destination.
– Google

We spent some three hours in the Old Town of Cartagena this morning, and came away with a good impression.
Just be prepared to say no gracias many times, to the street vendors selling t-shirts, hats, bottled water and soda, souvenirs and cubanos (cigars).
The day temperature rose rapidly through the morning, and it was already 90 °F (32 °C) when our taxi driver met us to take us back to the ship.