  In this short review we present some recently obtained traversable wormhole
models in the framework of general relativity (GR) in four and six dimensions
that somehow widen our common ideas on wormhole existence and properties. These
are, first, rotating cylindrical wormholes, asymptotically flat in the radial
direction and existing without exotic matter. The topological censorship
theorems are not violated due to lack of asymptotic flatness in all spatial
directions. Second, these are cosmological wormholes constructed on the basis
of the Lemaitre-Tolman-Bondi solution. They connect two copies of a closed
Friedmann world filled with dust, or two otherwise distant parts of the same
Friedmann world. Third, these are wormholes obtained in six-dimensional GR,
whose one entrance is located in "our" asymptotically flat world with very
small extra dimensions while the other "end" belongs to a universe with large
extra dimensions and therefore different physical properties. The possible
observable features of such wormholes are briefly discussed.
