A serene temple with stunning stained glass hides in downtown Dallas.

A man's home is his castle.

This “living museum” at UCLA exhibits thousands of plant species from all over the world.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

A curious whirlpool formation supposedly capable of entangling or engulfing branches, tree trunks, or whole rafts full of hapless tourists.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

The land is home to swimming ponies and a legendary 18th-century treasure.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

An extensive collection of ancient Egyptian artifacts and mummies.

Vikings and Evangelicals have both had a hand in this replica medieval church.

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

Healing Springs that once ran red with soldiers' blood.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

The highest point in Washington state is a volcano covered in glaciers.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

Turnip-shaped island just off the Michigan shore in Lake Huron.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

At the "Garage Mahal" in Houston, car culture is about more than just driving.