After a two-year makeover, Government Center station will once again be open for business on Monday.

After a renovation that began in March of 2014, the new transportation hub for the Green and Blue lines is now topped with a big glass box for a roof and has extra escalators and elevators, more fare collection terminals, fresh new materials and artwork on its platforms.

It’s also now fully accessible to riders in wheelchairs, in accordance with the Americans with Disabilities Act.

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The opening is actually ahead of schedule. The T earlier predicted it would open March 26.

Earlier issues with panels that make up the glass exterior didn’t slow down the process — the materials had to be replaced at the station-builders’ expense after they failed and started to fog.

The new glass headhouse is a noticeable change-up from the squat brick entrance it’s replacing. It's also fitted with changeable LED lights that make it glow.

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“We invite you to visit the totally modernized hub of the Green and Blue lines — now more comfortable, convenient and fully accessible for the first time in its 118-year history,” the MBTA wrote on its website.

The station officially opens at 12:30 p.m.