Seven Caves at La Jolla, California

Postcard US-3934052 to France shows the Seven Caves of La Jolla, near San Diego, California. Nestled between La Jolla Cove and La Jolla Shores, only one of caves is accessible by land while the other six can only be accessed by guided kayaking. Housed in a seventy-five million year old sea cliff, each of them has a unique name: White Lady, Little Sister, Shopping Cart, Sea Surprize, Arch Cave, Sunny Jim’s Cave, and Clam’s Cave.

Sunny Jim’s Cave, named after a cartoon character from a brand of cereal that was common at the turn of the century because of the similarity of the shape of their mouths, is the only known land accessed cave along the California coastline. In history, the cave's tunnel, leading to Coast Boulevard in La Jolla, was carved out by Chinese immigrant laborers for smuggling Chinese and other immigrants into the United States. Those intriguing caves were also once used to smuggle illegal whisky during the prohibition from 1920 to 1933.

Cliffs of Moher, Ireland

Postcard IE-78738 from Ireland shows a sunset view from the Cliffs of Moher or Aillte an Mhothair in Irish, located at the southwestern edge of the Burren region in County Clare, Ireland. According to Wikepedia, those cliffs rise 120 meters or 390 feet above the Atlantic Ocean at Hag's Head, and reach their maximum height of 214 meters or 702 feet just north of O'Brien's Tower, eight kilometers to the north. There is a round stone tower near the midpoint of the cliffs, built in 1835 by Sir Cornelius O'Brien, where visitors can see the Aran Islands in Galway Bay, the Maumturks and Twelve Pins mountain ranges to the north in County Galway, and Loop Head to the south. With almost one million visitors a year, it was one of the most popular tourist sites in Ireland.

A rainbow formed over Dublin in the evening yesterday as people in Ireland voted on a proposed constitutional amendment to legalize same-sex marriage. Final results indicated that 62% of voters and all but one district approved the amendment in a referendum Friday. It shows that support for marriage equality extended well beyond Ireland’s liberal urban centers and deep into its rural heartlands; and that a vote for same-sex marriage in Ireland is not a ‘No’ vote to Catholicism. Just as Prime Minister Enda Kenny proclaimed: “with today’s vote, we have disclosed who we are: a generous, compassionate, bold and joyful people.” Ireland became the first country to legalize same-sex marriage by popular vote in the world, joining 18 other countries (Netherlands, Belgium, Spain, Canada, South Africa, Norway, Sweden, Portugal, Iceland, Argentina, Denmark, France, Brazil, Uruguay, New Zealand, Britain, Luxembourg, and Finland) where same-sex couples can marry nationwide.

Rainbow at the end of the canvass,last night North Dublin Suburbs #IrelandSaysYes #IrelandVoteYes #irelandreferendum pic.twitter.com/gzk9UFZVDv

— Simy Frant (@SimyFrant) May 23, 2015

Swallow Grotto

Postcard TW-1240742 from Taiwan shows Swallow Grotto (Yantzkou 燕子口), a section of the Central Cross-Island Highway 500 meters from the Jinheng Park (靳珩公園) near Hualien, where the Liwu River twists and turns in the deep and narrow gorges. It is part of the Taroko National Park in Taiwan.

Several tunnels had to be built for the highway to pass through cliffs. Visitors could walk through the tunnels, enjoy the sight of streams below, and numerous small swallow grottos on the marble cliffs. However, swallows have moved away due to heavy human impacts.