  Although the Higgs potential in the Standard Model (SM) contains only a
simple electroweak symmetry breaking vacuum in the small field region,
additional metastable or global vacua could exist in models beyond the SM. In
this paper, we study one intriguing scenario with an additional electroweak
symmetric vacuum that could be the global one. For the thermal universe ending
at the current metastable vacuum, the electroweak symmetry should stay
non-restored at high temperatures. We realize the scenario in a model with
Higgs-portal couplings to SM singlet scalars with approximately global O(N)
symmetries with a large N. For a large portion of model parameter space, both
the quantum and thermal tunneling rates are suppressed such that our current
metastable vacuum is long-lived enough. Our scenario predicts order-one changes
for the Higgs self-couplings and a large contribution to the signal of the
off-shell Higgs invisible decay. It can be partly probed at the LHC Run 3 and
well tested at the high luminosity LHC. We also discuss the subcritical
(anti-de Sitter) bubbles from the thermal tunneling that could have a large
population and interesting cosmological implications.
