The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.

The unique location where the former president was rapidly sworn in.

After 97 years of constant vigilance from the dome of the Texas State Capitol, the original Goddess of Liberty retired to a life of climate-controlled leisure.

Located in the place where the Columbia space shuttle came down, a museum-memorial that is both touching and informative.

An oasis of lilies cultivated by the "Indiana Jones of Water Lilies."

Hike the ruins of a zoo that was shut down by an unsolved murder.

Constructed in 1859 as a general store and post office, the store is still used to this day and was featured in the Walking Dead series.

Fears of Satanic worshippers swirl around five Celtic-inspired megaliths.

An immense cave that has served as an outlaw's treasure trove, an underground dance hall, a nuclear fallout shelter, and much more.

A synth musician's paradise at the heart of a community responsible for the soundtrack to 'Stranger Things.'

This lake sits on an estimated 4 million tons of salt.

In Houston's airport, a cow is properly equipped to jump over the moon.

A community-funded monument to kindness in the face of life's difficulties.

An entire home filled with over 3,000 pieces of Santa memorabilia in glass cases, walls, on Christmas trees, and even in the bathroom.

On the outskirts of San Antonio, a small bridge is said to be the home of a mysterious local legend known as the "Donkey Lady."

A town pays homage to its namesake.

This refurbished gas station is one of the oldest in Texas, located on the original Route 66.

One of the last Art Deco gas station still standing in Dallas.

This failed condo development was reborn as a street art hub.

A tiny graveyard with a mysterious past.

A small museum dedicated to the king of Western swing.

One of the highest points in Bexar county offers birdseye views of San Antonio and a four-story stone tower.

A unique cartoon-filled roadside attraction.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.