Mendenhall Ice Caves, Juneau, Alaska

Mendenhall Ice Caves, Juneau, Alaska

The Mendenhall Glacier is a 12-mile-long glacier in the Mendenhall Valley, located only 12 miles from downtown Juneau in Southeast Alaska. Federally protected as part of the Mendenhall Galcier Recreation Area, a unit of the Tongass National Forest, the glacier originally had two names, Sitaantaagu ("Glacier Behind the Town") and Aak'wtaaksit ("Glacier Behind the Little Lake").

The Ice Caves are inside the glacier, accessible only to those willing to kayak to, and then ice climb over the glacier. However, the glacier is retreating increasingly fast as global warming heats the oceans and temperatures rise.

Monitored since 1942 by the Juneau Icefield Research Program, the Mendenhall Glacier has receded almost two miles since 1958, while previously it had receded only 0.5 miles since 1500. The caves are in part a function of this increased glacial melting.

Coordinate : 58°29′45″N 134°31′56″W

Angel Falls, Canaima Venezuela

The waterfall has been known as the "Angel Falls" since the Mid-20th century; they are named after Jimmie Angel, a US aviator, who was the first person to fly over the falls. Angel's ashes were scattered over the falls on 2 July 1960

The common Spanish name Salto Ángel derives from his surname. In 2009, President Hugo Chávez announced his intention to change the name to the purported original indigenous Pemon term ("Kerepakupai Vená", meaning "waterfall of the deepest place"), on the grounds that the nation's most famous landmark should bear an indigenous name.

Angel Falls is one of Venezuela's top tourist attractions, though a trip to the falls is a complicated affair. The falls are located in an isolated jungle. A flight from Puerto Ordaz or Ciudad Bolívar is required to reach Canaima camp, the starting point for river trips to the base of the falls. River trips generally take place from June to December, when the rivers are deep enough for use by the Pemon guides. During the dry season (December to March) there is less water seen than in the other months.

Outdoor sports: The dramatic sandstone table-top mountains, the tepuis, Roraima and Auyántepui (the Devils Mountain) in Canaima National Park's Gran Sabana region provide good opportunities for challenging outdoor activities such as mountain climbing in Canaima and trekking in Angel Falls.

Angel Falls also inspired the setting of the Disney animated film Up (2009) although, in the film, the location was called Paradise Falls instead of Angel Falls. It also makes a small appearance in the Disney film Dinosaur, as well as the 1990 film Arachnophobia. Most recently, it makes an appearance in the 2015 film Point Break.

Location:

Coordinate: 5°58′03″N 62°32′08″W

Giant's Causeway, Northern Ireland

 The Giant's Causeway is an area of about 40,000 interlocking basalt columns, the result of an ancient volcanic eruption. It is also known as Clochán an Aifir or Clochán na bhFomhórach in Irish and tha Giant's Causey in Ulster-Scots.

The Giant's Causeway, renowned for its polygonal columns of layered basalt, is the only UNESCO World Heritage Site in Northern Ireland and in 2015 was awarded the UKs Best Heritage Attraction at the British Travel Awards. 

Flora and Fauna

The area is a haven for seabirds such as fulmar, petrel, cormorant, shag, redshank, guillemot and razorbill, while the weathered rock formations host a number of rare and unusual plants including sea spleenwort, hare's-foot trefoil, vernal squill, sea fescue and frog orchid

A stromatolite colony was reportedly found at the Giants Causeway in October 2011 – an unusual find as stromatolites are more commonly found in warmer waters with higher saline content than that found at the causeway

The Giant’s Causeway is also steeped in myth and legend. Some say it was carved from the coast by the mighty giant, Finn McCool who left behind an ancient home full of folklore. Look out for clues of his existence

For centuries countless visitors have marvelled at the majesty and mystery of the Giants Causeway. At the heart of one of Europe's most magnificent coastlines its unique rock formations have, for millions of years, stood as a natural rampart against the unbridled ferocity of Atlantic storms. The rugged symmetry of the columns never fails to intrigue and inspire our visitors. To stroll on the Giants Causeway is to voyage back in time.

Your imagination will travel along stepping stones that lead to either the creative turbulence of a bygone volcanic age or into the mists and legends of the past.

Location:

Coordinate: 55°14′27″N 6°30′42″W

Badab-e Surt, Iran

These beautiful travertine terraces in Northern Iran are an incredible natural phenomenon that developed over thousands of years. Travertine is a type of limestone formed from the calcium deposit in flowing water, and in this case it's two hot springs with different mineral properties. The unusual reddish colour of the terraces is down to the high content of iron oxide in one of the springs.

Badab is a Persian compound of Bād "gas" + āb "water", translating to "gassed water", referring to the springs' waters being carbonated mineral waters. Surt is an old name for the Orost village and a Persian word meaning intensity.

Badab Soort's springs are two distinct mineral springs with different natural characteristics, located at 1,840 metres (6,040 ft) above sea level. The first spring contains very salty water that gathers in a small natural pool, its water is considered to have medicinal properties, especially as a cure for rheumatism and some types of skin diseases and skin conditions. The second spring has a sour taste and is predominately orange mainly due to the large iron oxide sediments at its outlet.

When and how to get there???

You can choose your weather – winters are mild and rainy, while summers are hot and dry.

You can go there by plane, train or bus get to Sari from Tehran. Then catch a taxi to Badab-e Surt through Kiasar.

Hot mineral springs fill the pools with healthy, very salty water, which heals rheumatism and various skin conditions. Visitors can hike around, enjoy the views and wade these pools, but waterproof footwear is advised. Tourists also can set a camping site nearby and enjoy the tranquility of unspoiled nature – there are no wild dangerous animals around.