The park was commissioned by the Hospital Termal Rainha D. Leonor to provide a recreational space for thermal spa patients.
It is named after King Carlos I, who visited the region during his reign.
The park grounds are home to the Museu de José Malhoa, purpose-built in 1933 to house the works of the famous Portuguese naturalist painter.
The central lake is a remnant of the historical water management system for the nearby thermal hospital.
The park features several sculptures from the Caldas da Rainha ceramic tradition, reflecting the city's pottery heritage.
An ornamental bandstand located within the park hosts local cultural events during warmer months.
Parque Dom Carlos I is a historic romantic-style garden serving as the green heart of Caldas da Rainha. Originally established in the late 19th century as a private park for the hospital thermal complex, it is known for its serene lake featuring swan-shaped pedal boats and migratory bird life. The park grounds house the José Malhoa Museum, which displays an extensive collection of 19th and 20th-century Portuguese art. Visitors can explore winding pathways lined with mature trees, duck ponds, and ornate bridges. A dedicated play area provides facilities for children, while the adjacent health spa maintains the city's long-standing connection to thermal waters. The park spans several hectares, incorporating a mix of formal garden beds and wilder woodland sections. It remains a central hub for city residents and local wildlife alike.
The red bridge overlooking the central lake provides a classic vantage point with the lush park canopy in the background.
Bring bread or seeds to feed the ducks and swans, which are accustomed to human presence.
Combine your visit with a short walk to the neighboring Museu da Cerâmica to see local artisanal works.
Utilize the shaded benches near the lake for a quiet retreat from the city center.
Do not attempt to swim in the lake, as it is strictly prohibited to protect the ecosystem.
Respect the wildlife and local flora by staying on designated paths; keep dogs on a leash.