reconstruction today would be prohibitive, due to such factors as a shortage of skilled masons. Both the interior and exterior skylights over the Grand Staircase were replaced in 2012. In March 2015, a military hall of honour opened in the Legislative Building commemorating the Manitoba's regiments who fought World War I. In 2016, work began on the building’s first gender-neutral washroom (2nd floor, west side). In November 2007, Manitoba became the first legislature in the country to install an accessibility ramp at its front entrance. Nonetheless, in May 2017, Rick Hansen (CEO of the Rick Hansen Institute) criticized the accessibility of the building after Independent MA Steven Fletcher gave him an official tour. In response, the Chamber was made wheelchair accessible in that very summer. The Chamber floor was raised , front-row desks were moved forward to allow wheelchair access between the first two rows, and a ramp was installed on the opposition side of the house. The renovation received a Heritage Winnipeg Conservation Award in 2018. On 22 January 2020, the province celebrated the 100th anniversary of the first session of the Manitoba Legislature held in the Chamber of the Manitoba Legislative Building. Material and dimensions Tyndall stone and marbles are used throughout the building, both including such fossils as sponges, gastropods (snails), cephalopods (mollusks), and trilobites. The largest fossil, found at the east portico, is 1 m (3 ft) wide and 30 cm (1 ft) high. The estimated weight of the building, constructed with a steel frame, is 243,851,258 kg (24,000 tons). Throughout the exterior and interior of the building are examples of Fibonacci Sequence, Golden Ratio and Sacred Geometry. There are two domes to the building: the outer dome; and an inner dome which is seen when standing in the Rotunda. A tunnel running under Winnipeg's Broadway Avenue connects the Legislative Building with the city's central powerhouse. It is part of a publicly-inaccessible system of tunnels linking other provincial government buildings with the powerhouse, which supplies heat to all these buildings. Exterior The total area of the building is , with a total height of above ground level, topped with a bronze statue of Roman God Mercury (Greek: Hermes) gilded with 23.75-karat gold leaf. The outer dome is supported by four compound girders that weigh 98,557 kg (97 tons) each. The Legislative grounds cover of landscaped grounds. The building rests on 421 concrete caissons, which pass through