Frederick Law Olmsted's design of the U.S. Capitol Grounds created a landscape that appears to be naturally formed, even though the entirety of it was shaped according to his exacting designs. Amid the stately trees, colorful flower beds and verdant lawns, Olmsted created a hidden gem that is clearly not natural: the Summerhouse, which visitors delight in to this day.

This quiet brick grotto is embedded in the slope northwest of the U.S. Capitol Building and skillfully blended into the pastoral landscape by careful plantings. A welcome retreat from the noise and bustle of the surrounding streets, the shade and water provided by the Summerhouse still serve the purpose Olmsted intended them to.

"There has been much complaint from the want of a resting place for those who walk from the bottom of the hill to the [Capitol] building," Olmsted reported to Congress in 1880. "To meet this want, a structure is now being erected, designed to combine both drinking fountain and a secluded and cool retreat."

Left: Olmsted's budget request showing a line through "Summer house on the south side." Right: Letter from Thomas Wisedell to Olmsted regarding the summerhouse.
Left: Olmsted's budget request showing a line through "Summer house on the south side." Right: Letter from Thomas Wisedell to Olmsted regarding the summerhouse.

Olmsted's plans for a similar structure for visitors walking up from the southwest were never realized, perhaps due to criticism from some in Congress of the north Summerhouse. In 1881, F.H. Cobb, the engineer in charge of Capitol Grounds removed only one item from Olmsted's budget request for the coming year: $3,000 for a "Summer house on the south side." Before it was cut from the budget, however, Olmsted had begun designing a south summerhouse; his sketches for it have been rediscovered.

Cobb might have been reacting to those who ridiculed Olmsted's designs. Senator James B. Beck of Kentucky asked about the Summerhouse, to laughter that rang out in the Senate chamber, "What was that for? I heard it was built for a monkey house."

The view through the wrought-iron window grate into the lush overgrown grotto of the Summerhouse.
The view through the wrought-iron window grate into the lush overgrown grotto of the Summerhouse.

Perhaps he was making a reference to the wrought iron gates that prevent visitors from entering at night, although Beck had already established his opposition to Olmsted's designs. He called the fountains Olmsted built on the east side of the U.S. Capitol, "a couple of Dutch spittoons."

Beck had likely seen the Summerhouse before it was blended into its surroundings. While it was under construction, the entire brick building was visible. Much of the completed structure would be covered by soil that matched the slope of surrounding ground or obscured by plants, vines and trees.

Thomas Wisedell, who oversaw construction of the Summerhouse, had anticipated a negative reaction. He observed that "criticism may be expected until the roof is on as it will appear so uneven in its outlines that the Washington people will not understand it. They spoke of its mass and redness when I was there."

Wisedell knew that those concerns "will be lost in your planting," but Olmsted estimated that it would take three years for the plants around the building to grow enough for people to see the full effect of his design.

The first impressions of the Summerhouse were likely fatal to Olmsted's plans for a second such retreat and resting space for visitors in the landscape to the south of the U.S. Capitol. The rediscovered sketches are incomplete and intriguing, indicating a more open design with sheltered seating next to a pond. Some also seem to be studies of sightlines for the structure, reflecting Olmsted's guiding principle for this design, which was that the central feature — the U.S. Capitol Building — was never obscured and was always framed as the focus of attention.

Plans showing details of the pond, pathways and plantings for the south summerhouse.
Plans showing details of the pond, pathways and plantings for the south summerhouse.

The surviving drawings give an idea of what Olmsted intended, including detailed lists of plants and locations to place them. They also appear to show that he would have preserved the symmetry of the grounds by placing the second structure in the same location to the south of the U.S. Capitol that the Summerhouse occupies to the north of the building.

It appears that Olmsted did not plan to create a mirror image of the brick structure, however. He explored various ideas for the unbuilt retreat, which would have been roughly triangular and bounded by three walk-ways. At one point, he appeared to consider placing seats across one of these paths, allowing the water and plants to fill the entire triangle. Olmsted’s final design for the south summerhouse showed all of the seats, pond and plants within the three paths around it, as is the case in the north Summerhouse.

Overall, the effect would have been of a naturally formed pond, emanating from a spring. What would have seemed to be the pond’s perimeter would have been made with retaining walls and other earthworks obscured by ivy and other plants. While Olmsted wanted to give visitors a sheltered spot for restoration, most important to him was that every element in his design would keep the focus on the U.S. Capitol Building. His plans were, he wrote, "in all respects subsidiary to the central structure.”

We can only speculate now about what wasn't built. But, if the south summerhouse were as successful as the Summerhouse that was completed, it would have become another beloved element of Olmsted's landscape, which matches the grandeur of the building it frames.


The Summerhouse is my favorite part of the Capitol Grounds. I only knew a second one was conceived and unbuilt, but nothing more. Franklin, I appreciate your extensive research. Thank you for sharing this fascinating story!

Build it!

In reply to by Stephen J. Marmon (not verified)

I agree -- let's build it now.

It is a beautiful spot.

This is my first time of the Summerhouse built, our next trip to the Capital I put this as a number 1 stop. Especially in fall, Thank you for this trip into our past.

Thank you for your research....and timely, too, in tribute to Olmsted

Note the picture of the 'Grotto' (original Iroquois name 'qwadake dikep', or 'spring on the hill') in the article and the copper pipe on the left side. For those taking natural pictures of the Grotto, that is something of an anomaly. For those who have always thought there should be two Summerhouses AND maybe several more like it spread along the Mall, one wonders if $4.00 worth of copper pipe would move the one in the picture out of sight further to the left. Otherwise, a very restful and photogenic place in all seasons.

When I came upon the Summerhouse by accident many years ago, it seemed utterly magical, a true oasis of beauty and calm. It has never ceased to enchant me, no matter how many times I have visited it in the years since. Thank you for giving us this background, bittersweet though it is to learn that another, equally lovely such place was never made. Perhaps someday, Olmsted's plan can be realized after all? I will hope so, however unlikely that may be-- as we continue to cherish the little jewel of a garden that was realized and remains one of Olmsted's most delightful gifts.

Add new comment

The content of this field is kept private and will not be shown publicly.

Plain text

  • No HTML tags allowed.
  • Lines and paragraphs break automatically.
  • Web page addresses and email addresses turn into links automatically.

Recent Stories

Related Articles

History & Discoveries

Top 5 Spots to Enjoy Spring on the Capitol Campus

Spring in Washington, D.C., is one of the most beautiful times to visit the nation's capital; it is also the busiest. Learn about five beautiful, and less known spots, to enjoy the warm weather near the U.S. Capitol including where you can see more than 100 cherry blossom trees.
History & Discoveries

The Architect of the Capitol Sweeps Up the Past

When Jim Kaufmann, Capitol Grounds and Arboretum Director, happened across an 1891 street-sweeping map while going through cultural landscape reports, he had no idea how simple an old map could make caring for the U.S. Capitol Grounds.
History & Discoveries

John Adams' Carriage Ride to Washington D.C., in 1800

President John Adams issued a letter to all federal agencies on May 15, 1800, directing the "removal of the public offices, clerks and papers" from the capital city of Philadelphia. In that single sentence, Adams started the final move of the U.S. government to its permanent home, the newly created city of Washington, in the District of Columbia.
History & Discoveries

Honoring the U.S. Capitol Guides Buried in Congressional Cemetery

Several of the men who first led tours through the U.S. Capitol are buried in Congressional Cemetery. In December 2019, a group from the Capitol Visitor Center Social Committee gathered at the cemetery to place markers on the graves of these guides and learn more about their lives.