A 70–80 m chain of waterfalls, with a 25 m main drop, plunging into a huge sinkhole in the Trascău Mountains and vanishing underground; seen from a wooden balcony a short walk from the road.
A two-tier waterfall of about 50 m in the Cerna Mountains, with Romania's longest free drop (~40 m), above Lake Prisaca; reached by a steep 1.5 km path from the Cerna valley road, 13 km from Băile Herculane.
A waterfall of about 15 m on the Vârciorog stream, tucked into a spruce forest below Piatra Grăitoare, near Arieșeni; reached up a wooded valley on foot or by horse cart.
An undeveloped cave in the Bihor Mountains, with ice at the entrance and white formations, where a Neanderthal footprint at least 62,000 years old was found in 1974.
Romania's deepest glacial lake, 29 m deep, at almost 2,000 m in the south-west of Retezat National Park; it can only be reached on foot, on a long day hike.