  Causal Dynamical Triangulations (CDT) is a lattice approach to quantum
gravity. CDT has rich phase structure, including a semiclassical phase
consistent with Einstein's general relativity. Some of the observed phase
transitions are second (or higher) order which opens a possibility of
investigating the ultraviolet continuum limit. Recently a new phase with
intriguing geometric properties has been discovered and the new phase
transition is also second (or higher) order.
