Mayrau, Open-air Museum of Mining
Mining Museum Mayrau is located about 30 km west of Prague.
On July 23rd 1874 Prague Iron Company began to dig a pit on the hill Homolka by Vinařice. The coal seam of thickness 9 m was revealed on the 28th September 1878 at a depth of 515.2 m. The mine was solemnly named after the then Chairman of the Board Dr. Kajetán Majer - Mayrau. The museum offers to its visitors a tour of technical monuments focused on documentation and presentation of mining in area of Kladno and Slaný.