Ipiales is close to the Ecuadorian border in Colombia. It is a obligatory stop over on your way to Ecuador. There is nothing much to see except the spectacular Iglesia de las Lajas (See Get Out).
There are frequent busses to Pasto and futher north. Collectivos will bring to Rumichaca for the border crossing.
The busstation is a bit out of town, but there are collectivos the center.
- Iglesia de las Lajas is a church spectacularly built on a mountainside. There are collectivos or take a taxi.