Patapsco Hotel

The Baltimore and Ohio Ellicott City Station Museum in Ellicott City, Maryland, is the oldest remaining passenger railway station in the United States, and one of the oldest in the world. It was built in 1830 as the terminus of the Baltimore and Ohio Railroad line from Baltimore to the town then called Ellicott's Mills, and a facility to service steam locomotives at the end of the 13-mile (21 km) run. The station, a National Historic Landmark, is now used as a museum.

Saint Paul Catholic Church is a Catholic parish located in Ellicott City, Maryland. It was founded in 1838 and is part of the Archdiocese of Baltimore. Babe Ruth married here. It is a two-story ashlar granite church which faces north. It is three bays wide and four bays deep. Its front facade includes two twin Roman arch windows each topped by a rose window, enclosed within a Roman arch lintel with keystone.

Mt Ida is a historic home in Ellicott City, Howard County, Maryland. Mt. Ida was built for William Ellicott, grandson of one of the city's founding brothers, Andrew Ellicott in 1828. It was built by Charles Timanus, who was also the principal builder of the neighboring Patapsco Female Institute and the Howard County Courthouse. Judge John Snowden Tyson and family lived at the residence from the 1850s, with his daughter Ida Tyson, for whom the mansion is now named, remaining in the house until the age of 90 in the 1920s. Ownership passed hands again to John Ward Wilson, then the influential Clark Family Commissioner Charles E. Miller attempted to rezone the property to convert the mansion into office buildings in 1972. As of 2013, the mansion was owned by the Miller Land Company.

George Ellicott House is a historic house located in Oella in Baltimore County, Maryland, United States. George Ellicott was a son of Andrew Ellicott, one of several brothers that founded Ellicott Mills (Ellicott City). George Ellicott bought swampland after the colonial war now known as the Inner Harbor of Baltimore. He used a horse drawn dredge to create shipping docks for his flour supplies.The George Ellicott House was built in Oella on the eastern shore of the Patapsco River opposite Ellicott City. The granite house was built in 1789. It resided on the grounds of the Wilkens-Rodgers flour mill. In 1972 the house was flooded by Hurricane Agnes and his brother Jonathan's neighboring house was destroyed. In 1983 the Maryland General assembly contributed $135,000 toward the $1 million expense of moving the house to higher ground on the other side of the street it resided on. The move was facilitated by a partnership between Historic Ellicott City Inc., James A. Clark, Jr., Judge John L Clark, and the Oella Company.

Rock Hill College was a boys' boarding school located in Ellicott City, Maryland. The school was divided into two departments: preparatory (for ages nine and up) and collegiate. The curriculum was based on physical education, sciences, and classical studiesRock Hill College was founded in 1824 as Rock Hill Academy and purchased in 1857 by the Institute of the Brothers of the Christian Schools (known as the Christian Brothers); Rock Hill College is sometimes referred in older publications as the Christian Brothers College. In 1865 The College was incorporated as Howard County's only college and construction of the four-story stone building was completed. During the Civil War, the college basement served as a hospital for Northern and Southern troops. In 1866, Brother Azarias (Patrick Francis Mullany) was called to be a professor of mathematics and literature at Rock Hill College. He was President of Rock Hill from 1879 to 1886. Baltimore architect George A. Frederick was involved in the architectural design of Rock Hill College. Classes included Greek and Latin. Though not a parochial school, St. Paul's Catholic Church in Ellicott City created a chapel for the students of Rock Hill College in 1859. The side chapel eventually became part of the church proper. The building was destroyed by fire on 16 January 1923 while most were in attendance at a basketball game. A chimney fire spread to the dormitory roof, burning all but the gymnasium. The school merged with Calvert Hall College High School in Baltimore. A new elementary school was built within the existing walls in 1926 and remained until 1976, when Worthington Elementary School opened. In 1991, the property was rehabilitated into Greystone condominiums, a residential condominium and townhouse development.

The Ellicott City Jail was the first detention facility in Howard County, Maryland.

Ellicott's Mills Historic District is a national historic district at Oella, Baltimore County, Maryland, United States. It is on the east bank of the Patapsco River, opposite Ellicott City. This historic district designation relates to the industrial operations of the Ellicott family from the 1770s through the mid-19th century. It consists of the sites of historic buildings including: an 18th-century building, a section of an 18th-century mill incorporated in a 20th-century factory, a 19th-century tavern, 19th-century workers housing, and an 1859 Italianate villa built by John Ellicott. Historically, these industrious mills were served by the major east–west route in Maryland during the early 19th century, the old National Pike. Also in the district is the mammoth multi-story Wilkins-Rogers Company flour plant, which is located on the site of the 1792 Ellicott Flour Mill, the first merchant flour mill in the United States.It was added to the National Register of Historic Places in 1976.

First Presbyterian Church is a historic church in Ellicott City, Howard County, Maryland adjacent to the Howard County Circuit Courthouse. The church is a cruciform shaped structure made of granite stone construction. The building was expanded and rebuilt after a basement collapse during construction in April 1894. The congregation relocated in 1960. Mrs. James A. Clark, Sr. purchased the church and donated it to the Howard County Historic Society.

Patapsco Female Institute (PFI) is a former girls' boarding school, now a partially rebuilt historical site, located on Church Road in Ellicott City, Maryland, United States. The grounds are home to popular outdoor theatrical performances by The Chesapeake Shakespeare Company. In the 1930s the Institute was also known as "Warwick".

Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 75,947 at the 2020 census, making it the most populous unincorporated county seat in the country. Ellicott City's historic downtown – the Ellicott City Historic District – lies in the valleys of the Tiber and Patapsco rivers. The historic district includes the Ellicott City Station, which is the oldest surviving train station in the United States, having been built in 1830 as the first terminus of the original B&O Railroad line. The historic district is often called "Historic Ellicott City" or "Old Ellicott City" to distinguish it from the surrounding suburbs that extend south to Columbia and west to West Friendship.

Lilburn Mansion, also known as the Balderstones Mansion or Hazeldene is a historic home located in Ellicott City, Howard County, Maryland. The site of the structure is on an original 2,500-acre land grant named the Valley of Owen. The gothic revival mansion was built on College avenue for Baltimore foundry owner Henry Richard Hazlehurst in 1857. The house has architectural features that included a bell tower and solarium. A 1923 fire destroyed the front parlor and interior. The original 20 acres site has been subdivided down to 8 acres with the guesthouse and carport outbuildings demolished.In later years, the mansion has been popularized by haunted house storytellers.

Lilburn Cottages are a group of historic cottages part of Liburn Mansion, located in Ellicott City, Howard County, Maryland. The cottages were built on an original 2,500-acre land grant named the Valley of Owen. The Gothic Revival Lilburn Mansion was built on College Avenue for Baltimore foundry owner Henry Richard Hazlehurst in 1857. The original 20-acre site has been subdivided down to 8 acres, and the guesthouse and carport outbuildings demolished. The site of the cottages was subdivided into a 6.75-acre parcel, which allowed the portion of the historic Lilburn complex to fall outside of the Ellicott City Historic district development protections.In 2013, owners Ronald and Gail Spahn allowed the Howard County Department of Fire and Rescue Services to burn the historic structures, including the adjacent Lilburn (Hammond) Cottage and Grimes house, before subdividing the property. Spahn's Autumn Development Corporation used Howard County slope stabilization legislation to help fund clearing the historic wooded site for single-family homes. KB homes marketed the subdivision as Autumn Overlook.