The Menil Collection is housed in a Renzo Piano building. More pics below.

Michael Heizer sculpture (detail).
During this journey, I've frequently altered my itinerary . . . and haven't regretted it once.
For example, after visiting relatives in Dallas, I had originally planned to go to Austin to swim in a famous outdoor pool. But the night before, I decided instead to go to Houston to see The Menil Collection.
As a result, I had the good fortune to experience perhaps the most astonishing gathering of art in North America.
The Menil Collection holds paintings, artifacts and sculpture collected by the Menil family. These works, ranging from very early Egyptian reliefs to modern masters, are extraordinarily beautiful, exemplars of their kind. This is not a "greatest hits" collection, but rather a "greatest intelligence" collection.
And the galleries display these works with an equal intelligence. For example, a 13th century CE Shinto deity sits in a small room with a 2nd century BCE relief of the Egyptian deity Horus. Although separated by 3,000 years, these two figures share much in common - the installation took my breath away.
Similar matches exist throughout the museum. A John Chamberlain sculpture sits across a hallway from a Morris Louis drip painting, and both inform the other. In fact, I feel like I finally "got" Chamberlain as a result of this match.
An Alexander Calder mobile hangs in front of a Joan Miro painting. Both dance together.
Even though the museum itself merits a journey, three additional buildings surround it and add to its luster. I don't know anything like this grouping of beauty, anywhere in the world.
The famous Rothko Chapel sits just 100 yards away from the Collection. Within the chapel hang 14 somber, profound Rothko canvas - vast and deep works that took me into new territory. Photo below.
An entire building is dedicated to over 40 works by Cy Twombly, the modernist painter who explored life and death with creativity and power. Another building houses a massive work by Dan Flavin, the modern sculptor who used florescent fixtures to great delight. And additional artworks are placed on the grounds surrounding these buildings.
The Menil Collection does not permit photography within the buildings so I've picked up some images from the tubes to give you a sense of the rich experience offered in Houston. The exterior pics were taken with my iPhone.
If you care about art, you will never regret making the journey to Houston.
Sculpture by Jim Love

Rothko Chapel

Cy Twombly

Gallery in the Collection.

Dan Flavin installation.