Tijuca Forest Where the Jungle Swallowed the City

Tijuca National Park is the world's largest urban forest — 32 square kilometers of Atlantic rainforest in the middle of Rio de Janeiro, surrounding the city on three sides and containing within it the Christ the Redeemer statue, dozens of waterfalls, and the kind of biodiversity that tropical ecologists fly to Brazil to study. The forest was almost entirely replanted in the 1860s after coffee plantations stripped the hills bare, and the fact that it looks like primary jungle today is a testament to what happens when you plant 100,000 trees and wait 160 years.

The Pico da Tijuca trail climbs to the park's highest point — 1,022 meters, with a view of the entire city: Copacabana's curve, Guanabara Bay, the distant hump of Sugarloaf, and the forest itself stretching below you in an unbroken green canopy that makes Rio look like a city the jungle built rather than displaced.

The Cascatinha Taunay waterfall near the park entrance is the most accessible cascade — a thirty-meter drop into a pool surrounded by ferns and bromeliads, and the mist that rises from the base cools the air ten degrees and carries the scent of wet stone and tropical vegetation. Toucans perch in the trees above (yes, actual toucans, not the Froot Loops kind), and the capuchin monkeys that patrol the forest edges are bold enough to investigate your backpack and smart enough to open the zipper.

Best season: May through September (Rio's "winter"), when the temperature drops to a manageable 25°C and the trails are less muddy. The rainy season (December-March) makes the waterfalls spectacular but the trails treacherous. Bring water, insect repellent, and shoes with grip. The park is free and open daily, and the multiple entrances (Alto da Boa Vista is the most convenient) make it accessible from every zone of the city.