The Broumov Walls (Broumovské stěny) is a national nature reservation. It was declared in 1956 and it covers a 12-km mountain ridge between Police nad Metují and Broumov. The rock walls dip steeply towards the Broumov basin and slope down gradually towards Police nad Metují.
The Broumov Walls are formed by individual rock towns, rock towers, deep gorges and mushroom-shaped rock formations. The upper level of the Broumov Walls is formed by a rocky terrain that provides tourists with numerous look-outs; the most beautiful ones are Hvězda (Star), Supí koš (Vulture's Basket), Modrý kámen (Blue Rock), Kovářská rokle (Smith's Gorge), Zaječí rokle (Rabbit Gorge) or Junácká vyhlídka (Scouts' Look-out) near the Božanovský Špičák Mountain which is the highest peak in the Broumov Walls (773 meters above sea level).
In the area there are a number of distinct towers, such as Lucifer (Devil), Kočka (Cat), Kačenka (Duck) or Sova (Owl). Besides rock towers, also caves, gates and mushroom-shaped rock formations are to be found here. Some of the local, cold pseudokarst caves can hold ice until July. The entire Broumov Walls ridge is easy to navigate as there is a dense network of tourist walking trails, some of which lead to more distant destinations such as Malá and Velká Kupa. The Broumov Walls are popular with cross country skiers and rock climbers. More attractive rock climbing terrains are, however, situated in the neighboring rock towns (Adršpach-Teplice Rock Towns, Jirásek's Rocks, Ostaš).
Hvězda - chapel of Virgin Mary
A baroque chapel of Virgin Mary on the Hvězda (Star) peak in the Broumov Walls nearby the village of Hlavňov was built in 1732-1733 according to plans of Kilián Ignác Dientzenhofer. The ground plan of the chapel has the shape of a five-point star. The interior ground plan is that of a circle with half-circle alcoves in each point of the five-point star. The chapel is accessible via a stone bridge and a few steps. There is a balcony corridor adjacent to the chapel that offers a great view of the Broumov basin and the Javoří Mountains.
Hvězda can be accessed from Hlavňov via the local red or blue tourist trail. The elevation difference is about 300 meters. Another option is a climb from Křinice via a red tourist trail or an ascend from Pěkov or Hony via yellow walking trail. There is an Alpine-style tourist lodge on the top of the Hvězda (674 meters above sea level) that was built by Abbot J.N. Rotter in 1856. The lodge is open all year round.