Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

35,000 grape hyacinths flow like water down a garden hill.

Found: Garden of Eden in Miami-Dade County, Florida.

A peaceful, unique botanical garden complete with waterfalls, mini islands, and swans.

A luxuriant botanical garden below sea level.

A hidden beach at the end of a tunnel of mangrove trees.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

A South African bar inside a hollowed out 6,000-year-old Baobab.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

Cool down and fill up after visiting Teotihuacán at this bar and restaurant in a deep, underground cave.

One of the few places where you can visit a cenote and Maya ruins at the same time.

A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

A clear blue swimming hole with hidden caves, still unexplored.

These azure waters were thought to lead to the Mayan Underworld.

The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

Take a dip beneath the stalactites in this amazing cenote.

This geothermal hot spring hides beneath a slowly growing mineral dome.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.