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A Glimmer of Peru’s Subterranean Wealth
If you’re looking for a place that combines science, art, and heritage in Lima, this museum is a must-visit.
Right on Jirón de la Unión, where every street breathes history, lies a treasure that shines brightly: the Andrés del Castillo Mineral Museum (MAD). This museum not only houses one of the world’s most impressive private collections of Peruvian minerals but is also located within an architectural gem, offering visitors a perfect fusion of spectacular geology and the capital’s colonial history.
The Andrés del Castillo Collection: Beauty in Crystal
The MAD’s main draw is its vast and dazzling collection of Peruvian minerals. It gathers thousands of specimens that showcase the geological richness that has been the economic and cultural pillar of Peru for centuries.
Every display case is a visual journey that transports you to the depths of the earth, revealing the hidden beauty beneath the Peruvian mountains.

You can admire:
- Spectacular Crystals: Rare, large-sized pieces that stand out for their geometric perfection and vibrant colors.
- Peruvian Rhodochrosites: The museum is famous for its incredible exhibition of rhodochrosites, an intense pink mineral found in Peruvian mines and highly valued worldwide.
- Precious Metals: Samples of gold, silver, and other minerals that tell the story of mining in the Andes.

History and Architecture: Casa Belén
The museum experience is complemented by its majestic setting. The Andrés del Castillo Mineral Museum is located in the historic Casa Belén (sometimes known as Casa Fernandini), a colonial mansion that has been carefully restored. Touring its halls, courtyards, and balconies is an architectural delight in itself.

By visiting the museum, you won’t just learn about geology; you’ll also get an intimate glimpse into what life was like in the grand residences of Lima’s Historic Center.
Visitor Information for the Andrés del Castillo Mineral Museum
The MAD is perfectly situated to be included in any tour of the Lima museums downtown.
- Location: Jr. de la Unión 1030, Historic Center of Lima. It’s a short walk from the Plaza Mayor. View map
- Hours: Generally open Tuesday through Saturday. Visiting hours are usually morning and afternoon.
- Tickets: There is a general admission fee and discounts for students and seniors.
Adult: | S/ 15 | Foreign: S/ 20 |
Students & Seniors: | S/ 10 (Peruvian National) | S/ 15 (foreign) |
Children & School Groups: | S/ 5 |
Museum Night: | S/ 10 |
Recommendation: Since hours and fees may vary, it is always best to check the official website of the Andrés del Castillo Mineral Museum before planning your visit.
- Museum Website: mad.com.pe
The Andrés del Castillo Mineral Museum is a surprising destination. It offers a brilliant pause in your historical journey, reminding you that Peru’s wealth is not only in its culture and history but also in the natural wonders that lie beneath its soil. Don’t miss out on visiting and marveling at it!