A seismic isolation bearing has a lower plate and an upper plate separated by a slider. The lower plate has an upward facing concave surface. The upper plate has a downward facing concave surface. The slider includes a first member and a second member separated by a shock absorbing pad. The first member has an upper convex surface that slides along the concave surface of the upper plate. The second member has a lower convex surface that slides along the concave surface of the lower plate. In the event of an earthquake, the lower plate and the upper plate are intended to move relative to each other via the slider to dissipate the horizontal seismic energy. In addition, the shock absorbing pad can deform to absorb the vertical seismic energy. Thus, the seismic isolation bearing can increase its ability to isolate seismic energy.