Castelos do Açu: A Mountain Fortress in Serra dos Órgãos National Park
Hike to the iconic Castelos do Açu in Serra dos Órgãos National Park for breathtaking views and an unforgettable mountain experience.
Castelos do Açu, or the Castles of Açu, are a remarkable rock formation located in the Serra dos Órgãos National Park, near Petrópolis. Rising to approximately 2,200 meters, these towering rock structures offer breathtaking views and a challenging yet rewarding hiking experience, marking the first day of the famous Petrô x Terê traverse.
A brief summary to Castelos do Açu
- Magé, Chácara Entrerios, State of Rio de Janeiro, 25940-000, BR
- +55242236-0464
- Visit website
- Monday 8 am-5 pm
- Tuesday 8 am-5 pm
- Wednesday 8 am-5 pm
- Thursday 8 am-5 pm
- Friday 8 am-5 pm
- Saturday 8 am-5 pm
- Sunday 8 am-5 pm
Local tips
- Start early, as the hike to Castelos do Açu is strenuous and takes approximately 5-6 hours to ascend.
- Bring plenty of water and snacks, as there are limited opportunities to resupply along the trail.
- Check the weather forecast before you go, as conditions in the mountains can change rapidly.
- Consider staying overnight at the mountain shelter to witness a spectacular sunset and sunrise.
- Be prepared for steep inclines and uneven terrain; hiking poles can be helpful.
Getting There
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Hiking
The final approach to Castelos do Açu involves a steep, 8km (5 mile) hike from the Petrópolis entrance of the Serra dos Órgãos National Park. From the park entrance (elevation 1,125m), follow the well-marked trail towards the mountain shelter at Açu (elevation approximately 2,200m). The trail passes by notable landmarks such as the Véu da Noiva waterfall, Pedra do Queijo viewpoint, and Mirante do Ajax. Be prepared for a challenging ascent with an elevation gain of over 1,000 meters (3,280 feet). Park entrance fee: Approximately R$34 per person per day. This fee is subject to change, so it's best to check the official PARNASO website for the most up-to-date pricing.
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