The local zoo is quite large and features animals from various parts of Ecuador; monkeys, Andean bears, tayras (these may poop on visitors!), and jaguars, birds including condors, toucans and parrots, and Galapagos tortoises from but also snakes and tarantulas.
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Well-run set of cables with competent guides and good name-brand gear. The zipline trip goes once into a crevasse between two rocks at a mild incline, followed by a climb, a rope bridge, and a zipline back to nearly the start point. It's about 10 minutes out of town, and takes 15-20 min to complete the circuit.
Head up to the statue of the Virgin Mary which overlooks the town for nice views, but be warned, it's a heart-pumping hike! Elevation gain is 250m, the trail is mostly stairs. It starts next to the public cemetery, there is a small shop selling snacks at the beginning of the trail.
The bridge across the deep Pastaza Gorge is just north of downtown and a world class place for bungeejumping.
The central park just west of downtown is lined by the city hall and tourist information.
Lively park right next to the basilica.
Nuestra Señora del Agua Santa
This neo-Gothic style church is named after the vision of the Virgin Mary seen near the appropriately named waterfalls and is therefore a place of pilgrimage for those who come to thank the Virgin for many miracles and to ask for her blessing. It was built with many volcanic rocks and the inside is lined with paintings depicting the Virgin's miracles, including saving the church from several volcanic eruptions.