“To Sua” means “giant swimming hole” in Samoan. It’s a collapsed lava tube hole on the south coast of Upolu in Samoa. On top of lava cliffs overlooking the South Pacific, you clamber down the ladder for a memorable swim. To Sua is but one of the attractions of Samoa: gorgeous waterfalls, marvelously friendly people, and the historic home named “Valima,” of Robert Louis Stevenson (1850-1894), where he and his wife Fanny spent his last years.

On a hilltop rising above Valima is the gravesite of “Tusitala” – Stevenson’s Samoan name, meaning “Telling of Tales.” Engraved on the side of his tomb is his famous epitaph he wrote himself:

Under the wide and starry sky

Dig the grave and let me lie:

Glad did I live and gladly die,

And I laid me down with a will.

This be the verse you 'grave for me:

Here he lies where he long'd to be;

Home is the sailor, home from the sea,

And the hunter home from the hill.

Jack Wheeler is Escape Artist’s World Exploration Expert. He is the founder of Wheeler Expeditions at WheelerExpeditions.com.

I showed this picture to my mother after my latest sojourn with the Afghan Mujahaddin fighting the Soviet Union and she didn’t see anything unusual. She didn’t recognize her own son standing in the middle. Good thing – if I had been caught by the KGB or Spetsnaz, it would have been, ahh… unpleasant. I was there with the “Muj” at least a dozen times until they defeated the Soviet Red Army in early 1989 – which led to the Fall of the Berlin Wall eight months later and the extinction of the Soviet Union itself by the end of 1991. It was one of the most thrilling – and consequential – adventures of modern times. (photo ©Jack Wheeler)

Jack Wheeler is Escape Artist’s World Exploration Expert. He is the founder of Wheeler Expeditions at WheelerExpeditions.com

The world’s most spectacular nature park is the 130-acre Gardens by the Bay in Singapore. In the gigantic greenhouse of the Flower Dome, virtually every rare flower on earth flourishes in abundance, while the Cloud Forest is a wonderland of tropical waterfalls seemingly falling out of the sky high above.

Dominating the park are the 160-foot high Supertrees, towering vertical gardens covered in orchids, ferns, vines, and exotic plants. There are elevated canopies and walkways between them. Exploring the astonishing display of hi-tech botanical artistry and genius that is Gardens by the Bay is absolutely awe-inspiring.

TTPer Cassowary was kind enough to guide me through the park as Singapore is his home. (Glimpses of Our Breathtaking World #102 photo ©Jack Weeler)

The Golden Madrasa or College of Tilla-Kori was built by Samarkand ruler Yalangtush Bakhadur in the 1650s to house and teach the best and brightest students of his realm. It stands at the center of the wondrous Registan public square complex of the Silk Road oasis city of Samarkand, known to the ancient Greeks as Marakanda.

It was centuries old when Alexander conquered it in 329 BC. For a thousand years as Central Asia’s great entrepot on the Silk Road between China and the Mediterranean, it was a cosmopolitan center for Hinduism, Buddhism, Judaism, Zoroastrianism, and Nestorian Christianity. Incorporated into the Islamic world in the 700s, sacked by Genghiz Khan in 1220, rebuilt by the time Marco Polo in 1272 described it as “a large and splendid city,” Tamerlane made it his capital in 1370.

I was first in Samarkand to stand astonished at the Registan in 1963. Seeing it now, far more impressively preserved than in the Soviet days, made me gasp – especially how Tilla-Kori is once again lavishly decorated with gold. You’ll gasp too should you ever be fortunate enough to come here. (Glimpses of Our Breathtaking World #223 photo ©Jack Wheeler)

800 hundred years ago in 1221, Genghis Khan established the capital of the Mongol Empire he created at a place called Karakorum in the grasslands of central Mongolia. It became a city of palaces, temples, and mansions of the Mongol nobility, a place of fabulous wealth that left Marco Polo in awe when he visited in in the 1270s.

When Mongol rule over China ended a hundred years later, the Chinese rulers of the Ming Dynasty ordered Karakorum razed to the ground with all evidence of its existence obliterated. All that was left was this solitary stone turtle lying in mute witness to the glories of what was here once and is no more. Known as the Stone Turtle of Genghis Khan, it’s all there is for you to try and imagine the magnificence of the past amidst what is now an empty wilderness. (Glimpses of Our Breathtaking World #149 Photo ©Jack Wheeler)

Dar al-Hajar, the Rock Palace, was built by Yemen’s ruler, Imam Yahya Muhammad Hamiddin (1869-1948), atop a rock pinnacle as his summer residence. It lies in a valley about 10 miles outside Yemen’s capital of Sana’a. While an iconic example of Yemeni architecture, it’s impossible to visit now with civil war raging in the country. Someday we’ll be able to safely return to Yemen again. (Glimpses of Our Breathtaking World #143 Photo ©Jack Wheeler)