The malecón (boardwalk) in Leticia.
Parque Santander in Leticia. Those blurs are pericos (small parrots), which filled the sky at this city park around sundown.
The dock at Puerto Nariño, about 2 hours up the Amazon River from Leticia. At this time of year, the water level of the river and its tributaries is very low. Most of the population of the town are indigenous Ticuna. There are no motorized vehicles except a tractor to move trash and an ambulance.
The border between Leticia, Colombia and Tabatinga, Brazil. One side speaks Spanish and the other Portuguese. You can freely move across the border without passing through immigration, but for exit and entry stamps to travel from one country to another outside of this zone, you need to visit immigration offices on opposite ends of each city.